Book of Dimma (Trinity College Dublin MS 59)

Introduction: A Pocket in the Hand of the Church

Among the manuscripts held in the Library of Trinity College Dublin, the Book of Dimma occupies a curious and instructive position. It is neither the largest nor the most sumptuous of the early Irish gospel books preserved there — it is, in fact, decisively the opposite of the Book of Kells, which sits a few cases away in the popular imagination and in the exhibition halls. And yet the Book of Dimma has something the great display books cannot offer so readily: a legible, almost tactile record of how an ordinary sacred book was made, used, doctored, venerated and, in a sense, killed by the very reverence lavished upon it. Catalogued today as Trinity College Dublin MS 59 (and, in the older Trinity classification still frequently cited, MS A.4.23 or A.IV.23), it is an eighth-century Irish “pocket” gospel book associated with the monastery of Roscrea in County Tipperary, a foundation of Saint Crónán.

This essay sets out to describe the manuscript on its own terms — its parchment, its script, its decoration, its colophons — and then to situate it within the wider culture of Insular manuscript production and within the long afterlife that transformed it from a working book into an enshrined relic. Throughout, the aim is to distinguish carefully between what is documented in the manuscript and reliable scholarship, what is reasonably inferred, and what is legendary accretion. The Book of Dimma has attracted more than its share of the last category. The story that a scribe named Dimma copied the four gospels in a single day — a day miraculously prolonged for forty days and forty nights so that the sun never set — is one of the best-known tales in Irish hagiographic tradition, and it is almost certainly the reason the book bears the name it does. It is also, in its literal sense, false, and one of the tasks of a responsible account is to explain how a demonstrable forgery in the manuscript’s own colophons came to be enshrined, quite literally, as sacred history.

Codicological Description: The Body of the Book

The Book of Dimma is a small book. It comprises 74 folios (148 pages) of parchment and measures approximately 175 by 142 millimetres — that is, roughly 17.5 by 14.2 centimetres. These dimensions matter, because size is the defining feature of the class of manuscript to which Dimma belongs. It is, notably, the largest of the surviving Irish pocket gospel books, and even so it fits comfortably in one hand. The text is written in Latin, in an Insular minuscule script, heavily abbreviated, and laid out for the most part in two columns.

The contents, as reconstructed from the digitised manuscript and the Trinity College catalogue, run as follows: the Gospel of Matthew (pages 2–29), the Gospel of Mark (pages 30–52), the Gospel of Luke (pages 54–98), a later-inserted liturgical text — an order for the Unction and Communion of the Sick, sometimes styled the missa de infirmis — occupying pages 99–103, and the Gospel of John (pages 104–148). The four evangelist images stand at the head of their respective gospels: full-page portraits of Matthew (p. 2), Mark (p. 30) and Luke (p. 54), and, for John, not a portrait but his symbol, the eagle (p. 104).

The manuscript is bound, or was originally structured, in six irregular quires, and here a codicological observation of some importance emerges. Each gospel occupies its own set of quires. This is characteristic of Irish gospel books and has fed a long-running scholarly suggestion — associated above all with Patrick McGurk’s foundational study of the pocket gospel book — that such volumes were not necessarily bound as single codices from the outset, and that the individual gospels may have circulated as separate booklets, carried in a satchel, before being gathered into one binding. The blank first and last pages of Matthew’s gospel, which may have served as a protective cover, lend some support to the idea that the units had independent lives.

The parchment itself tells a story of economy rather than luxury. Scholars who have examined the manuscript closely describe the membrane as, in places, ill-prepared and even unruled, with the text crammed onto the page in a small, uneven, abbreviated hand. This is not the calf-skin extravagance of Kells, with its hundreds of hides and its ruled grandeur; it is a serviceable book, made to be used. The impression of haste and practicality is reinforced by the decoration, to which we will come, where linework is sometimes wobbly and mistakes were drawn over rather than erased.

The modern physical history of the book should be noted here for completeness, since it bears on what a reader sees today. The manuscript was rebound in 1957 by the celebrated conservator Roger Powell, with wooden boards and modern vellum, and it was then disbound, conserved and rebound again in 2016 by John Gillis as part of Trinity’s early Irish manuscripts project. That project, which ran in the mid-2010s, digitised the book and made it freely available online, and it generated much of the technical scholarship — on pigments, hands and structure — on which any current account must rely.

The Pocket Gospel Book: A Genre and Its Discontents

To understand what the Book of Dimma is, one must understand the category to which it is conventionally assigned. The term “pocket gospel book” was coined by Patrick McGurk in his 1956 article “The Irish Pocket Gospel Book,” published in the journal Sacris Erudiri (volume 8, pages 249–270). McGurk observed that a number of small-format gospel books produced in Ireland (and by Irish hands abroad) between roughly the seventh and ninth centuries shared a cluster of distinctive features, and he argued that they should be considered together as a group. His article rapidly became a standard reference and his characterisation of the group has been repeated, often uncritically, ever since.

The features McGurk identified included: small size; texts confined to the four gospels, generally without the fuller apparatus of prefaces, canon tables and chapter lists found in grander gospel books; gospels belonging to an “Irish mixed-text” family; each gospel occupying its own quires; a compact minuscule script; a certain “scribal indiscipline”; and a modest decorative scheme, often limited to evangelist images and enlarged initials. McGurk suggested that these were personal books, used for private study or preaching, carried by travelling monks in satchels, and perhaps serving the same purpose as the small Bibles or portable breviaries of later friars.

The corpus is small. In his foundational article McGurk discussed eight examples, all from Ireland, dating from the seventh through the ninth centuries; roughly eight manuscripts are still conventionally counted as pocket gospel books, though the exact membership varies with the criteria applied. Alongside the Book of Dimma, the group typically includes the Book of Mulling (Trinity College Dublin MS 60), the Cadmug Gospels (Fulda, Landesbibliothek, Codex Bonifatianus 3), the gospels within the New Testament portion of the Book of Armagh (Trinity College Dublin MS 52), the MacDurnan Gospels (Lambeth Palace Library MS 1370), the Book of Deer (Cambridge University Library MS Ii.6.32), the Stowe St John (in the Stowe Missal manuscript, Royal Irish Academy MS D II 3), the British Library manuscript Additional 40618, and Bern, Burgerbibliothek, Cod. 671. Within this company the Book of Dimma is the largest at 175 by 142 mm; the smallest, the Cadmug Gospels, measures only 125 by 112 mm across some 65 folios.

It is worth registering that the tidy category McGurk created has been questioned by more recent scholarship. A doctoral thesis by Eleanor Jackson, completed at the University of York in 2017 and provocatively titled To Hold Infinity in the Palm of Your Hand: The Insular Pocket Gospel Books Re-evaluated, points out that the name is something of a misnomer — the books have no demonstrable connection with actual “pockets” in the modern sense, and the term was retrofitted from much later bibliographic usage. Jackson notes that many of the features McGurk listed are in fact shared by other Insular manuscripts, while some are exhibited only inconsistently within the group itself, so that “the pocket-gospel group remains hazily defined.” This is a healthy corrective. It reminds us that “pocket gospel book” is a modern scholarly convenience, not a category the makers of the Book of Dimma would have recognised, and that the assumed uses of these books — as personal copies conveyed on the body — have often been “assumed rather than rigorously argued.” The Book of Dimma is nonetheless a genuine and central example of the small-format Irish gospel book, however we choose to label the class.

Script, Hands and Palaeography

The palaeography of the Book of Dimma is where documented fact, careful inference and older error meet most productively. The manuscript is written in Insular minuscule, and it was long celebrated as a specimen of pure Irish calligraphy. The great palaeographer E. A. Lowe, in his monumental survey of the oldest Latin manuscripts, treated the script as a characteristic example of late eighth-century Irish minuscule; this palaeographic dating, corroborated by the style of the decoration, underpins the consensus that the book was written towards the end of the eighth century.

That dating displaced a much older and more romantic belief. Because the colophons name a scribe, Dimma, who was traditionally identified with a monk of Saint Crónán’s time, the book was for centuries assigned to the seventh century — indeed to the very lifetime of Crónán, who died around 619 or, in some accounts, 640. The nineteenth-century antiquarian tradition, exemplified by writers such as Eugene O’Curry and the account published by James Halpin in the Irish Ecclesiastical Record in 1890, still treated the book as a seventh-century production written for Crónán by his scribe. The palaeographic evidence is decisive against this: the script is a century or more too late. The seventh-century date is a legendary accretion, and it should be set aside.

More interesting still is the question of how many hands wrote the book. Older scholarship already recognised that the volume was not the work of a single scribe. The traditional distinction, drawing on Kathleen Hughes’s classic study of the early Irish church, is that the gospels other than John are “written for the most part in a rapid cursive script,” while John is “by a different scribe, in neat minuscule bookhand.” This is an observation anyone can confirm by looking at the digitised pages: John’s gospel is markedly more even, more disciplined, more “bookish” than the hurried hands of the synoptic gospels.

The most authoritative recent analysis is that of John Gillis and Bernard Meehan, whose chapter “Examining the Book of Dimma, the Scribe Dianchride and the Gospel of John” appeared in the 2017 volume An Insular Odyssey: Manuscript Culture in Early Christian Ireland and Beyond. Their study of the text identified five distinct hands responsible for the manuscript as a whole. The scripts of Matthew and Mark were largely the work of one scribe; Luke was mostly the effort of another; and the gospel of John — treated, in the medieval understanding, as separate and special, the gospel of the disciple whom Jesus loved — appears to have been allotted to the most accomplished scribe available, whose confident, even hand and carefully executed decoration set it apart from the rest of the book. The finding that each gospel occupies its own quires, combined with the distinctiveness of the John material, has led to the suggestion that John may have been a physically separate unit, and that the date at which it was joined to the other three gospels is genuinely uncertain.

The claim of collaborative, multi-hand production is well supported and should be presented as documented fact. It also quietly demolishes the central premise of the legend: a book written by five hands cannot have been copied by one monk in a single miraculous day.

The Colophons and the Name of Dimma

Here we reach the heart of the matter, and the point at which the Book of Dimma becomes not merely a manuscript but a case study in medieval forgery and modern detection.

Each of the four gospels ends with a subscription — a scribal note, partly in Latin, partly in Old Irish, asking for prayers for the scribe. In the surviving state of the book, three of these — at the end of Matthew (p. 29), Mark (p. 52) and John (p. 148) — contain the name Dimma. The best-known is the subscription at the end of John, which reads: “Finit. Amen. Dimma mac Nathi.” The end of Matthew carries a prayer “for Dimma who wrote it for God, and a blessing.” These are the inscriptions that gave the book its name and its fame.

The decisive observation, however — and it can be verified on the manuscript — is that in each of these three cases the name Dimma is written over an erasure. The parchment beneath has been scraped and a new name inserted. Only one colophon escaped the doctoring: the subscription at the end of Luke (p. 103), which was left intact. And that intact colophon preserves a different name altogether. The standard scholarly transcription, in Whitley Stokes and John Strachan’s Thesaurus Palaeohibernicus (Volume II, 1903, page 291), reads the crucial passage as a prayer “for Dianchride for whom this book (hic liber) has been written, and for Dimma writing (Dimmae scribenti).” The name preserved unaltered in the Luke colophon is Dianchride (in the dative form, Dianchridiu).

The scholar who established the significance of this was Richard Irvine Best, whose article “On the Subscriptiones in the ‘Book of Dimma’” appeared in the journal Hermathena (volume 44) in 1926. Best demonstrated that the colophons had been tampered with — that the original scribe’s name (or names) had been erased and “Dimma” substituted, in a deliberate attempt to pass the book off as the miraculous gospel book of the Dimma of Saint Crónán’s Life. Best dated the substituting hand, and the related insertion of the office for the sick, to the late tenth or early eleventh century. His conclusions have become the scholarly consensus, and they are summarised crisply in the Dictionary of Irish Biography, which states that the book “was written towards the end of the eighth century for Dianchride” and that “in the inscriptions signed by the original scribes, the names have been erased and Dímma’s substituted.”

The motive is not hard to reconstruct. By the tenth or eleventh century, Roscrea possessed a hagiographic tradition in which Saint Crónán had commissioned a gospel book from a scribe named Dimma, completed under miraculous circumstances. A community that wished to claim it possessed that book — a contact relic of its founder — had an obvious incentive to make its oldest gospel book bear the right name. The forger was, however, either careless or reverent enough to leave the Luke colophon alone, and so the original name Dianchride survives to convict the alteration. It is a rare and valuable thing: a medieval forgery caught in the act by the very evidence it failed to suppress.

Who, then, was Dianchride? Here documented fact gives way to scholarly argument. Gillis and Meehan, and the Trinity College Library’s own account, connect the name to a local kindred: the name Dianchride occurs in the genealogies of a Tipperary family (variously given as the Uí Chorcráin or associated with the Múscraige near Roscrea), which would locate the book’s original patron or scribe firmly in the book’s own region. A different reading has been advanced by Bart Jaski, whose article “Dianchride and the Book of Dimma” appeared in Peritia (volume 32) in 2021. Jaski explicitly challenges the recent consensus — the view that the first three gospels were commissioned by, or written by, Dianchride of the Múscraige; the view that the substitution of the name Dimma was a fraud inspired by the hagiographic tale; and the view that the date at which John was added is unknown — and proposes alternative explanations. The details of Jaski’s alternatives lie behind a paywall and cannot be stated here with confidence; what can be said is that the identity of Dianchride, and the precise circumstances of the alteration, remain genuinely debated. What is not in serious doubt is the core fact: the name Dimma in three of the four colophons is a later insertion over an erasure, and the original book was not “Dimma’s” at all.

One further error deserves debunking. The scribe named in the colophons, “Dimma mac Nathi,” was traditionally identified with a certain Dimma who is said to have become bishop of Connor and who is mentioned, alongside Crónán, in a letter sent by Pope John IV¹ concerning Pelagianism in Ireland around 640. This identification, repeated in older reference works such as the Catholic Encyclopedia, cannot be sustained; it collapses entirely once the eighth-century date of the book and the fraudulent character of the “Dimma” colophons are recognised. The Dimma of the colophons is not a historical scribe of the book at all, let alone a seventh-century bishop.

Finally, a note on the Old Irish verse. Following the John colophon there stands a short passage of Old Irish verse in which the scribe asks that he not be harshly criticised and that he receive, as the reward of his labour, a dwelling in heaven. Eugene O’Curry famously described these lines as among the oldest specimens of pure Irish writing then known. The verse is a small human touch — a scribe’s prayer for a fair reading and for salvation — and it survives, like the Luke colophon, as a trace of the book’s original makers beneath the later overwriting.

The Decoration: Evangelists, Eagle and Initials

The decorative programme of the Book of Dimma is, by the standards of Insular gospel books, modest. It consists of illuminated initials and four full-page illuminations, one at the head of each gospel: evangelist portraits of Matthew, Mark and Luke, and, for John, the eagle symbol. There are no carpet pages, no canon tables, no elaborate cross-carpet compositions of the kind that dazzle in Lindisfarne or Kells. This restraint is entirely consistent with the pocket format; small books of this class rarely carried the full display apparatus.

Man of Ink and Pattern: The Evangelist Portrait at the Opening of Matthew

The page presents a single full-length figure held within an architecture of ornament that occupies almost the whole of the written space. The composition is conceived as a grid: a broad outer border, coloured in a warm orange-red, is crossed by horizontal and vertical bars that divide the field into nine compartments, of which the central one — considerably the largest — contains the figure. Corner panels and the intervening rectangles are filled with a repertory of Insular pattern types kept strictly separate from one another: knotwork in the four corners and along the lower bar, angular key or fret patterns down the two lateral panels, and, along the upper bar, a running band of interlace punctuated by small spiral and lentoid motifs. The lower bar carries a looser interlace interrupted by a lozenge-shaped ornament at the centre. The ordering principle is one of containment. Each species of ornament is given its own cell, and no motif is permitted to migrate across the ruled divisions, so that the frame reads less as a border than as a set of compartments assembled around the figure.

The evangelist himself is rendered frontally and with almost complete disregard for anatomical articulation. The head is disproportionately large. The eyes, wide and lidded, with pupils set high, look directly outward; the nose is drawn as a narrow vertical with flaring nostrils; the mouth is small and reddish, all but submerged in a broad, dark, semicircular beard that sweeps from ear to ear and constitutes the visual centre of the upper body. The hair is treated as a series of scalloped, ochre-yellow lobes fanning symmetrically around the crown, and is bounded in turn by a nimbus formed not of a continuous disc but of a ring of small red dots — a solution that reduces a theological attribute to a rhythm of pigment. Rows of dotted contour follow every edge of the drapery, and the same dotting reappears in the border of the collar and along the hem, so that the figure is essentially constructed out of line, dot and flat colour rather than out of modelled volume.

The garment resolves into a series of interlocking shapes. A triangular pectoral panel, filled with a triquetra-like knot and small circled discs in red and pink, occupies the chest. Beneath it the evangelist holds a rectangular object — pink-red, plainly the codex of his own gospel — clasped against the body with two small, splayed hands whose fingers are drawn as separate strokes. Below the waist, two long teardrop or leaf-shaped forms sweep outward and downward to left and right, each filled with pink and studded with rows of small ringed dots, terminating in tight volutes at their lower ends. These almost certainly represent the falling ends of the mantle, though the artist has abstracted them so far from cloth that they function chiefly as a pair of balancing curves; the visual analogy with wings is a modern impression rather than an iconographic statement, and should be resisted. Between and below them a rectangular panel, ruled with vertical rows of dots, gives the lower garment, from beneath which emerge two disproportionately small legs and a pair of dark, pointed feet turned outward — a device that hovers the figure above the lower frame rather than settling it on any ground line.

The palette is limited and earth-bound: ochre-yellow, orange-red, pale pink, a muted olive-green, and the brown of the drawing ink. There is no gold, and no blue is deployed on this page. This restraint is consistent with what technical analysis of the manuscript has indicated more generally — an economy of locally available materials handled with considerable skill, rather than an outlay on imported luxury pigments.

The physical condition of the leaf is legible in the image and forms part of its historical evidence. The parchment is discoloured and cockled, darkened along the outer edge; the upper margin and the lower right of the frame carry visible stitched repairs, the thread of the larger tear running diagonally across the border and into the field of the portrait itself. Small dark perforations are visible within the ruled frame and adjacent to the figure’s hands; these have been connected in the scholarly literature with the nails driven through the manuscript when it was sealed inside its shrine, though the photograph alone cannot establish that identification. Faint traces of writing show through from the other side of the leaf, and a modern pencilled page number appears at the foot.

It is worth noting that the figure bears no inscription identifying him on this page, so that the attribution to Matthew rests on position — the portrait stands at the head of the first gospel — rather than on a titulus. And the older habit of describing such images as crude or unskilled misreads their intention. The precision of the fretwork, the control of the interlace and the consistency of the dotted contour indicate a draughtsman entirely capable of what he set out to do; the aim was an emblem for contemplation, not a description of a man.

Liber and Chi-Rho: The Opening of Matthew and the Genealogy of Christ

Facing the evangelist portrait, this page carries the opening of the first gospel and constitutes the most elaborately organised text page in the manuscript. It is unusual in that it stages not one beginning but two: the incipit of Matthew proper at the upper left, and, roughly at the midpoint of the page, the sacred monogram introducing the account of the Nativity at Matthew 1:18. The decorative energy of the page is concentrated in these two moments, and the intervening genealogy — the long chain of begettings that opens the gospel — is treated as a compact, almost tabular field between them.

The whole is enclosed within a rectangular frame of restrained but carefully differentiated ornament. Along the upper edge runs a band of pinkish-red interlace, terminating in a small square knotwork panel at the right corner; the corresponding band at the foot repeats the device in a slightly denser weave, closed at the right by a further ornamented corner square. The left border is filled with a long vertical strip of running interlace, while the right border is composed of two parallel elements: an outer band of angular fret and a narrow inner file of red dots, which continues along the lower edge as a single row of evenly spaced points. The effect is one of measured containment, less exuberant than the portrait page opposite, and evidently intended to frame writing rather than to compete with it.

The initial at the upper left is the letter L of Liber, drawn on a large scale and given zoomorphic life. Its vertical stroke swells into a broad pear-shaped bowl washed in pink, and the head of the letter dissolves into a knot of interlaced bands from which emerge, at the top, two elongated bird or beast heads with beak-like snouts and small round eyes; a third head, similarly drawn, terminates the lower curve of the letter and turns back into the field. The following letter, an I, is set immediately beside it, so that the two form the customary Li ligature that opens the genealogy:

Liber generationis Iesu Christi filii David filii Abraham

The words are begun in slightly enlarged script and then diminish quickly into the ordinary minuscule of the text — the graded diminuendo characteristic of Insular incipit pages, here handled with economy rather than display.

The genealogy occupies two narrow columns and is set out with striking regularity. Each line names a father and a son, linked by a heavily abbreviated formula — the autem genuit of the Vulgate compressed to a pair of contracted signs — so that the reader sees, in effect, a vertical ladder of names punctuated by identical marks. The scribe has exploited the abbreviation system to fit a genealogy of some forty generations into a small compass, a solution entirely in keeping with the manuscript’s pocket format, where space is at a premium and legibility is subordinated to compactness. Nomina sacra appear in their usual contracted forms throughout.

The second focus of the page is the monogram XPI, placed at the head of the right-hand text block, where Matthew turns from genealogy to narrative:

Christi autem generatio sic erat

The Chi is drawn as a great pink-tinted diagonal cross whose arms are filled with fine interlace, one limb sweeping down and terminating in a foliate or fan-shaped flourish; the Rho rises beside it with a rounded bowl enclosing further knotwork and a scatter of red dots; the I follows in a slender ornamented shaft. This is the Chi-Rho of the Insular tradition in its reduced, portable register — recognisably the same theological gesture that reaches its monumental form in the Book of Kells, but scaled to a book meant to be carried rather than displayed on an altar. It should be stressed that its prominence here is conventional, not idiosyncratic: the ornamentation of the Name of Christ at this precise verse is one of the defining features of Insular gospel decoration.

To the right of and below the monogram the text continues in continuous lines rather than columns, running through the account of Joseph’s dream and the naming of Emmanuel to the arrival of the magi. Several sentence-openings within this block are marked by modestly enlarged letters touched with red — a low-key hierarchy of initials that guides the eye without interrupting the flow.

The condition of the leaf is conspicuous and historically informative. The upper margin has been repaired with a coarse stitched seam running nearly the full width of the page, and a second, finer line of stitching is visible descending through the lower text column; the parchment there has been drawn together and the writing distorted. The outer left edge is torn and holed, with two large perforations near the margin. Scattered across the text field are small dark green spots, most likely the corrosion products of a copper-based pigment; several coincide with points where the facing page would have rested, and the transfer of colour between adjacent leaves is a recurrent phenomenon in this manuscript. The parchment is unevenly discoloured, darkened at the edges and translucent in places, with show-through from the verso legible in the margins. A modern pencilled numeral 3 stands at the foot of the page.

Two observations by way of caution. The ornament here is drawn and washed rather than painted in body colour: the palette is confined to pink-red, ochre and the brown of the ink, and there is neither gold nor blue. And while the page is often reproduced as a specimen of the manuscript’s finest work, its interest lies less in luxury than in the intelligence of its planning — the way a small leaf accommodates a monumental initial, a dense genealogical table and a decorated monogram without any of the three crowding the others.

Marcus Enthroned: The Evangelist Portrait at the Opening of the Second Gospel

This is the second of the manuscript’s three evangelist portraits, and it differs from the Matthew of p. 2 in almost every respect except its underlying conception. Where that image was set within a nine-compartment grid of ornament, here the frame has been reduced to a single plain rectangle in orange-red, drawn in two parallel lines and left entirely unfilled. The whole decorative burden has been transferred to the figure and to the structure that supports him, with the result that the composition breathes in a way the earlier page does not: broad areas of bare parchment surround the evangelist on three sides, and the eye is given nothing to rest on but the man himself.

The page is identified. Above the upper border, in the outer margin, a small inscription in minuscule reads marcus — a titulus of a kind absent from the Matthew page, and the only textual confirmation on any of these images of whom we are looking at. It appears to have been written in the ordinary ink of the text hand rather than added later, though the photograph alone cannot settle that point.

The evangelist is shown frontally, seated, and framed by what is unmistakably a throne or chair. Two vertical posts rise at either side, banded in yellow and edged with rows of fine dots; each is crossed by a horizontal arm at roughly the height of the figure’s shoulders; and each terminates above in a large, elegantly drawn bird’s head, in profile, turned inward toward the evangelist. The heads are given long tapering beaks, small round eyes and a curling crest that ends in a tight volute. The device is a familiar one in Insular art, where furniture terminals are routinely animated in this fashion, and it should be read as ornamental zoomorphism rather than as an iconographic reference to any particular creature; there is no basis for identifying these heads with the lion that is Mark’s own symbol.

The figure himself is far more fully painted than the Matthew, and constructed from an interlocking system of curved bands. The head is oval and comparatively naturalistic in proportion, with large almond eyes set beneath continuous arching brows, a narrow nose and a small, downturned mouth that gives the face its characteristic gravity. The hair is rendered as a compact mass of yellow ringlets, each drawn as a small spiral, framing the face and curling behind the ears. There is no nimbus, and no dotted ring of the kind that served that purpose on p. 2.

Below the neck the body dissolves into pattern. Two great teardrop-shaped bands sweep down from the shoulders and meet at the waist, enclosing the torso within a pointed oval; the space between and within them is filled with alternating blocks of orange-red, yellow, and a muted olive-green, separated by narrow reserved lines and edged with rows of red dots. Two small triangular panels flanking the chest each contain a triquetra knot — the only true interlace within the figure, and a deliberate accent at the point where the eye naturally settles. Held against the body, in both hands, is a rectangular red codex; the hands are small, pale, and drawn with the fingers indicated as separate strokes, in the same manner as the Matthew portrait.

The lower half of the body repeats the logic of the upper. Two long leaf-shaped forms, banded in yellow, red and green, descend to left and right and taper to points near the base of the frame; between them the hem of the garment appears as a rectangular panel filled with vertical stripes and a series of small wavy red lines, a curiously calligraphic passage that reads almost as an abstraction of pleated cloth. Beneath the lower border, and outside the frame altogether, a small dark form suggests the evangelist’s feet, drawn in the dark brown of the ink and, as on p. 2, unsupported by any ground line. The effect is again one of a figure suspended rather than seated in any physical sense, despite the presence of a chair.

The palette is limited but handled with evident confidence: ochre-yellow, orange-red, an olive-green, and the brown of the drawing ink, applied as flat washes with no modelling and no gold. The green in particular is used structurally, alternating with the red to articulate the bands of drapery. Compared with the Matthew page, the drawing here is steadier, the fills are more even, and the design is more coherently resolved — an observation worth registering, since the manuscript was the work of several hands and its decoration is not of uniform quality throughout.

The condition of the leaf is relatively good. The upper margin carries a stitched repair running across the full width, and a further line of stitching secures the outer edge along much of its length; the outer margin is worn and slightly ragged, with small losses near the lower right. A brown stain spreads across the upper left of the page and a lighter one at the lower left. A small dark perforation is visible in the right margin, level with the figure’s book, and another within the lower part of the drapery. Faint show-through from the verso is legible in places. A modern pencilled numeral 30 stands at the foot.

Interestingly, the seated, frontal, book-holding evangelist framed by a throne is a formula of considerable antiquity, ultimately Mediterranean in origin, transmitted to Ireland through late antique gospel books and there thoroughly transformed. What the Book of Dimma offers is not a failed imitation of that model but its deliberate reworking into a language of flat colour, symmetry and pattern — an image intended to be recognised and contemplated rather than looked into.

A Figure Dissolving into Drapery: The Evangelist Portrait Preceding Luke

The third of the manuscript’s evangelist portraits stands at the head of the third gospel, and it is at once the most damaged and, in certain respects, the most formally daring of the series. The frame has been simplified even further than on the Mark page: a single broad band of orange-red, drawn as a plain rectangle with a thin reserved line inside it, encloses the whole composition, with no interlace, no fret, and no corner panels. Whatever ornamental ambition the artist possessed has been spent entirely on the figure.

The evangelist is shown frontally and seated, though the seat itself is barely indicated — a low horizontal ledge at the base of the design, edged with a row of red dots, from which two slender legs and a pair of small dark feet descend. The head is small in relation to the body and set high within the frame. The face is drawn with sparse means: two large round eyes with clearly marked pupils, a long narrow nose, a small closed mouth, and a chin that tapers to a point. Framing it is a striking headdress or coiffure, rendered as two pale curving lappets that fall on either side of the face and terminate in tight spirals at the level of the shoulders, each outlined by a trail of small red dots. The same dotted line continues around the crown, so that hair and nimbus are effectively fused into a single decorative contour — a solution comparable to the dotted halo of the Matthew portrait, but here integrated into the hairstyle rather than set behind it.

Below the neck the figure becomes almost pure pattern. A large triangular pectoral panel, pale yellow and sprinkled with red dots, hangs from the collar over the chest; from the shoulders two broad bands sweep outward and downward in long, symmetrical curves, banded alternately in orange-red, cream-yellow and a dark olive-green, and edged throughout with fine reserved lines. These bands cross, double back and taper to points at either side of the lower frame, producing a silhouette that is markedly wider than it is tall and that reads more as a system of interlocking ribbons than as clothing. It is here that the artist departs most decisively from the Mark portrait: where that figure was constructed from closed teardrop compartments, this one is built from open, sweeping curves that spill toward the margins.

The gospel book is held to the right of centre, a plain rectangle of solid orange-red, larger and more assertive than in either of the companion portraits. A single hand grasps its lower edge, the fingers indicated as four parallel strokes; the corresponding left hand is not visible, absorbed into the drapery. Beneath the book, at the base of the figure, a rectangular panel filled with vertical wavy red lines against a green ground represents the hem of the garment — precisely the same calligraphic device used for Mark’s hem on p. 30, and one of the clearest indications that the three portraits are the work of a single artist despite their differences of design.

The palette is again limited to orange-red, cream-yellow, olive-green and the brown of the ink, applied flat and without modelling. No gold is present, and no blue.

The condition of the leaf must be given real weight in any reading of this page, because it conditions everything we see. The surface of the parchment is heavily abraded across the whole of the painted area: the pigments are rubbed, patchy and in places reduced to a ghost of their original density, and the fine drawn contours survive better than the washes they were meant to contain. The upper margin carries a long stitched repair running the full width of the leaf, above a broad band of dark discolouration; the outer edge is worn, with further stitching visible along its length; brown stains disfigure the lower right corner and, more damagingly, two large dark blots sit within the lower frame itself.

Those blots are of particular consequence, because they partly obscure an inscription. Written beneath the figure, within the frame and divided by the evangelist’s feet, are two short groups of letters in minuscule. They are legible only in part and any transcription from a photograph would be conjectural; what can be said with confidence is that this page, like the Mark portrait, once carried some form of written identification, and that the evidence for it is now compromised by staining. A modern pencilled numeral 54 stands at the foot of the leaf.

Again, the attribution of the portrait to Luke rests on its position at the head of the third gospel rather than on any surviving legible titulus, and the damaged inscription cannot at present be made to bear that weight. Second, the abraded state of the page has often led to its being passed over in favour of the better-preserved Mark; but the design here is the most inventive of the three, and its wide, radiating drapery represents a genuine formal experiment — the moment at which the Book of Dimma’s artist pushed furthest toward turning the human body into ornament.

Quoniam quidem multi: The Incipit Page of Luke

Facing the abraded evangelist portrait of p. 54, this page carries the opening of the third gospel and is, on any reckoning, the most fully realised decorated text page in the manuscript. Where the incipit of Matthew on p. 3 had to accommodate a genealogy and a monogram within a single leaf, here the designer worked with a simpler text and a freer hand, and the result is a page of unusual coherence: a monumental initial, a densely written block of gospel text, and a frame that for once is treated as a serious ornamental undertaking in its own right.

The frame is the most elaborate in the book. It consists of a double rectangle in orange-red enclosing four bands of ornament, with square panels at the corners in the manner of a carpet page reduced to its border. The upper and lower bands are filled with a continuous knotwork ribbon reserved in pale yellow against a dark ground, executed with a regularity of over-and-under that shows real command of the idiom. The two lateral bands, by contrast, carry a different pattern: a lattice of lozenges alternately filled with orange-red, ochre-yellow and olive-green against dark hatching, producing a chequered, almost textile effect. That the vertical and horizontal bands should be given contrasting motifs is a deliberate compositional decision, not an inconsistency — it keeps the frame from becoming monotonous and marks the corners as junctions between two systems. Each of the four corner squares holds an independent small design: knotwork at the upper left and upper right, fret and step patterns below.

The initial Q of Quoniam dominates the upper left of the written area. Its bowl is drawn as a great rounded form in heavy black outline, the interior washed in orange-red and containing a knot of interlaced bands in cream and olive that terminates in what appear to be stylised animal or foliate heads. The tail of the letter descends well below the bowl and ends in a second, smaller ornamental flourish — a trumpet-like or foliate terminal picked out in yellow with a black contour. The letter is thus given two decorative foci, one enclosed and one pendant, and it occupies roughly a third of the height of the text block.

The remaining letters of the first word are set to the right of the initial and run down the page in a narrow column of enlarged script

uoniam quidem multi conati sunt ordinare narrationem

after which the letters diminish steadily into the ordinary minuscule of the text. This is the classic Insular diminuendo, and it is handled here more gradually and more elegantly than on the Matthew page. The text is Luke’s prologue, addressed to Theophilus, whose name is legible in the line beginning optime Theophile; the narrative then moves into the opening of the gospel proper, with the days of Herod king of Judaea, the priest Zacharias and his wife Elizabeth, and their childlessness. The layout shifts partway down the page from the narrow column beside the initial to full-width lines running the whole breadth of the frame — a practical accommodation to the space left once the initial is passed, and a common feature of Insular incipit pages.

The script is a compact Insular minuscule with the heavy abbreviation characteristic of the manuscript throughout: nomina sacra contracted, -orum and -us suspended, and the ampersand-like et ligature used freely. A few sentence-openings are marked by slightly enlarged letters touched with red.

Three marginal additions deserve notice, and they are of different dates and characters. Across the upper margin, above the frame and now largely obscured by a broad brown stain, runs a line of writing in a considerably later hand — larger, more angular, and clearly not the work of the original scribe. A second, small annotation in a fine hand appears in the outer margin at mid-height. A third, in the lower margin beneath the frame, is likewise partly submerged in staining.

The physical condition is comparable to the other leaves of this quire. A stitched repair runs across the upper margin, where the parchment has darkened and the edge is ragged; further stitching is visible along the gutter. Brown staining affects the upper margin heavily and reappears in a broad blot below the frame. The parchment is cockled and shows through from the verso in places. A modern pencilled numeral 55 stands at the foot.

The frame here is executed with a precision that bears comparison with far grander books, and the relationship between initial, diminuendo and frame has been carefully planned rather than improvised. The manuscript was written by several hands of unequal accomplishment; its decoration, on this evidence, was not.

The Eagle and the Book: The Symbol of John

This page marks a deliberate departure from the three that precede it. Where Matthew, Mark and Luke are introduced by human portraits, the fourth gospel is prefaced not by a figure but by a symbol: the eagle of John, displayed frontally with wings raised and body filled with pattern. The substitution is not accidental, and it is not a shortcut. The gospel of John was treated throughout Insular manuscript culture as a book apart — the gospel of the beloved disciple, the one whose opening words rise to the eternal Word — and in this manuscript that distinction is registered at every level: a separate quire, the finest scribal hand in the book, and here, an emblem rather than a man.

The page is also the most richly coloured in the manuscript, and the difference is immediately visible. For the first time a substantial blue enters the palette, deployed across the eagle’s head, breast and the inner fields of the wings, and set against the familiar orange-red and a yellow used with unusual density and body. Technical analysis of the manuscript’s pigments has indicated that the blues of these Irish books were achieved not with imported lapis lazuli but with indigo mixed with gypsum, and that certain of the bright yellows derive from orpiment, an arsenic sulphide capable of imitating gold convincingly. The yellow here — laid on thickly in the frame interlace and in the ribs of the wings — is precisely the kind of passage that has misled viewers into speaking of gilding where none exists.

The frame is the most complete in the book, and considerably more ambitious than that of the Luke incipit. A broad orange-red band, punctuated along its whole length by evenly spaced yellow dots, encloses four panels of ornament. The upper and lower bands carry a bold, wide-gauge interlace in yellow against a dark ground, reserved with real assurance. The lateral bands are filled with a narrower, denser plait interrupted at intervals by lozenges in red and yellow. Four corner squares each hold an independent motif — a grid or step pattern at the upper left, knotwork at the upper right and lower right, and a small stepped cross at the lower left. The whole reads as a border in the true sense: an ordered enclosure that gives the emblem its ceremonial setting.

The eagle itself is constructed on a strict vertical axis. The head, in blue with a red eye and a strong hooked yellow beak, is turned slightly to the left — the single asymmetry in an otherwise symmetrical design, and the element that gives the creature its watchfulness. Behind it rises a circular nimbus formed of two concentric red rings enclosing a ring of red dots, the same dotted device used for the haloes of the human evangelists but here given a full circular frame. Two great wings sweep upward and outward, each drawn as a long curved sheath in yellow and red that tapers to a point near the upper corners of the field, and each doubled by a second, lower pinion descending to left and right, banded in blue and red and studded with rows of yellow and red dots. The upper wing-coverts are filled with scale patterns in blue and red, giving the plumage a heraldic regularity.

The body is treated as a series of enclosed compartments outlined in yellow: two large lobes flanking a central pointed field, all filled with blue and red and scattered with dots, below which a triangular panel of fine cross-hatching represents the lower breast. The legs emerge in blue, with pale spurred feet.

The detail that has attracted most comment lies at the base of the composition. The eagle’s talons grasp a rectangular object, red with yellow studs, whose upper edge is closed by a flap secured with a row of small fastenings. This is the gospel book, and it is shown not bare but in its cover or satchel. The observation matters, because such a cover survives: the l, found in a bog in north County Tipperary in 2006 and assigned to around the year 800, confirms that what the illuminator drew was an object he knew rather than a decorative invention. The eagle of John does not merely hold scripture; it holds a book equipped for travel — an apt emblem, in a manuscript that was itself made to be carried.

A further comparison is worth registering. The ink-drawn eagle of John in the Book of Armagh, a manuscript securely dated to 807–808, has repeatedly been noted as resembling this one. The two are not copies of a single model, but they belong recognisably to the same workshop tradition, and the Armagh parallel is among the firmer grounds for placing the Book of Dimma late in the eighth century.

The condition of the leaf is markedly better than that of the earlier illuminated pages. A stitched repair crosses the upper margin, and traces of red offset from the facing page are visible along that edge and within the upper field of the frame — the consequence of the closed book pressing pigment against pigment over centuries. A small perforation appears in the outer margin at mid-height. Otherwise the pigments retain much of their density, and the drawing is largely unrubbed. A modern pencilled numeral 104 stands at the foot.

The prominence of this page is sometimes taken as evidence that the eagle page was the manuscript’s original frontispiece, or that John’s section was the book’s finest because it was made first. Neither follows. What the evidence supports is narrower and more interesting: that John’s gospel occupied its own quires, that it was assigned to a different and more accomplished scribe, and that the moment at which it was joined to the other three gospels remains genuinely open.

In principio erat verbum: The Incipit of John

Facing the eagle, this is the page toward which the whole manuscript may be said to lean. It carries the opening of John’s gospel, and everything about it — the script, the initial, the layout — declares that the maker considered this beginning different in kind from the three that came before.

The most immediate difference is the absence of a frame. Where the incipits of Matthew and Luke were enclosed within ruled and ornamented borders, here the text runs free on the page, and the decorative energy is concentrated entirely in a single monumental initial occupying the whole of the left margin from the top of the leaf almost to its lower third. In place of a border, a trail of small red dots follows the contour of the initial and then runs down the page beside it — a device that outlines the letter rather than boxing the text, and that gives the page its characteristic openness.

The initial is the letters IN of In principio, drawn in ligature as a single towering monogram. The tall shaft of the I descends the full height of the design, filled with orange-red and studded with yellow dots, its foot curling outward into a slender animal head with a long yellow beak and a small dark eye — a quiet echo of the eagle on the facing page, and the only zoomorphic element on the leaf. The N beside it is treated quite differently: its interior is filled not with interlace but with a rectilinear labyrinth of stepped bands in yellow, blue and red, folding in on itself in a maze-like key pattern of great precision. This is the same blue that appears in the eagle — indigo-based rather than lapis, on the evidence of technical analysis of the manuscript’s pigments — and its use here binds the two facing pages into a single decorative unit. The right-hand stroke of the N swells into a broad red panel, again dotted with yellow.

The remaining letters of the first word run across the top of the text area in a line of display capitals:

RINCIPIO,

drawn tall, angular and confidently spaced. Beneath them the script drops immediately into the text hand and continues without further hierarchy — a diminuendo executed in one abrupt step rather than the gradual tapering used on the Luke page.

The layout below the initial is governed by the shape of the letter. For the first fifteen lines or so the text is confined to a narrow column at the right, squeezed beside the descending shaft of the I; once the initial ends, the lines expand to the full width of the page and continue so to the foot. The passage covered is the whole of the Johannine prologue: the Word with God at the beginning, all things made through him, the light shining in darkness and the darkness not comprehending it, the man sent from God whose name was John, the Word made flesh dwelling among us, and the closing distinction between the law given through Moses and the grace and truth that came through Jesus Christ. Two secondary initials mark the internal divisions of the prologue — an enlarged F at

Fuit homo missus a Deo

and an ornamented E at

Et verbum caro factum est

providing a discreet articulation of the text without interrupting its flow.

The script itself is the point most worth dwelling on. It is markedly finer, more regular and more disciplined than the hands of the synoptic gospels: the letters are evenly formed, the spacing is controlled, the lines are straight without visible ruling, and the abbreviation system is deployed with an economy that never sacrifices legibility. This is the observation, long registered in the literature, that the gospels other than John are written for the most part in a rapid cursive while John is the work of a different scribe in a neat minuscule bookhand. Recent codicological analysis has identified five hands in the manuscript overall and has argued that the finest of them was reserved for John — a conclusion this page makes visible at a glance.

In the upper margin, above the text and in a slightly different aspect from the body script, stands the word Iohannis, identifying the gospel. It corresponds to the marcus written above the Mark portrait on p. 30, and belongs to the same practice of marginal titling.

The physical condition is good by the standards of this manuscript. A stitched repair runs across the upper left of the leaf, passing behind the head of the initial. Faint red offset from the facing eagle page is visible along the upper edge and around the initial, the pigment having transferred while the closed book lay under the pressure of its shrine. Small dark specks appear in the gutter and at the outer margin. The parchment is otherwise clean and the ink strong. A modern pencilled numeral 105 stands at the foot.

A closing observation, offered as interpretation rather than fact. The two facing pages, 104 and 105, form the manuscript’s only true opening in the full sense — a designed pair, sharing a palette, echoing each other in the animal head and the dotted contour, and together doing for John what neither the portrait nor the incipit alone does for the other evangelists. Whatever the history of the book’s assembly, and the moment at which John’s quires joined the rest remains an open question, this pair was conceived as a unit.

The eagle of the Book of Dimma has a recognised relative. The eagle of John on folio 32v of the Book of Armagh, drawn in ink, is repeatedly noted by scholars as resembling that of the Book of Dimma — a genuine visual link between two roughly contemporary manuscripts of the pocket-gospel tradition, the Armagh gospels being securely datable to around 807–808.

The materials of the decoration have themselves been the subject of recent, revealing analysis. As part of the Trinity project, conservators Susie Bioletti and Allyson Smith carried out non-destructive pigment analysis, published in An Insular Odyssey under the title “Shining a Light on the Pigments of Early Irish Manuscripts.” Their work overturned an old assumption.

It had long been supposed that the intense blue in these Irish manuscripts derived from lapis lazuli, the costly stone whose only known medieval source lay in Afghanistan — an assumption that implied a long-distance trade in a luxury import. In fact, as Bioletti put it, the illuminators “used an indigo blue mixed with gypsum, aiming for a lapis-like effect,” and more generally relied on “more local materials used with expertise than exotic imports.” Some of these materials were toxic — red lead, and a bright yellow derived from orpiment, an arsenic sulphide that could pass convincingly for gold. This is a significant corrective: the Book of Dimma and its relatives achieved their visual impact through ingenuity and skill rather than through expensive raw materials, a finding entirely in keeping with the book’s character as a serviceable rather than a lavish production.

A word on aesthetic judgement is in order, because older descriptions of the book have sometimes been condescending. It is tempting to call the images “crude,” and nineteenth-century writers were not always kind. But the decorative interlace and the assured patterning of the frames reveal genuine artistic capability, and the book has a handwritten, personal, almost intimate quality that the impeccable, print-like majuscule of Kells does not possess. Rachel Moss and Susie Bioletti, reflecting on the Trinity project, have noted that Dimma and Mulling have a more spare, even “modern” aesthetic, with exquisite linework, a delight in surface effects, and a play on opacity and translucency. The book should be judged for what it is: an intimate devotional object, not a failed attempt at a display masterpiece.

Related Manuscripts: Dimma in Company

The Book of Dimma is best understood in relation to its siblings, and the comparisons illuminate both what is typical and what is particular about it.

The closest comparison is the Book of Mulling (Trinity College Dublin MS 60), also an eighth-century (or late eighth- to early ninth-century) Irish pocket gospel book, also preserved at Trinity, and also — significantly — later enshrined in a cumdach. Mulling takes its name from a colophon at the end of John reading “Nomen scriptoris Mulling dicitur,” which was long taken to mean that the scribe was the Leinster saint Moling (died 697), founder of Tech-Moling (St Mullins, County Carlow). The parallel with Dimma is striking and instructive: in both books a gospel manuscript came to be associated by name with a monastery’s holy founder-figure, and in both cases modern scholarship treats the attribution with caution. Mulling contains evangelist portraits, illuminated initials, and — famously — a colophon drawing of concentric circles interpreted as a symbolic plan of Moling’s monastery. Mulling also, unlike the original core of Dimma, contains a set of Eusebian canon tables (added, rather than original), a point studied by Elizabeth Mullins in her work on the Eusebian apparatus in Irish pocket gospels.

The Cadmug Gospels at Fulda (Codex Bonifatianus 3) represent the small end of the spectrum. Preserved among the relics of Saint Boniface and possibly the work of an Irish-speaking scribe named Cadmug, the book is tiny — about 125 by 112 mm — and has been called, since Wallace Lindsay’s description of 1910, Boniface’s “pocket-copy” of the gospels. It shares Dimma’s compact minuscule and its “scribal indiscipline,” but it is even more reduced in decoration.

The Book of Armagh (Trinity College Dublin MS 52) offers a different kind of comparison. It is not a pure pocket gospel book — it is a New Testament combined with Patrician documents — but its gospels are laid out on separate quires and share features that led McGurk to consider them alongside the pocket gospels. Crucially, Armagh is precisely datable in a way Dimma is not: its principal scribe, Ferdomnach, worked at the dictation of Torbach, heir of Patrick and briefly abbot of Armagh, and completed the gospel of Matthew on 21 September 807 (Torbach held office only in 807 and died in 808). Armagh thus provides a fixed palaeographic anchor for late eighth- and early ninth-century Irish minuscule, against which Dimma’s undated script can be measured — and, as noted, its eagle of John visually resembles Dimma’s. The contrast in documentation is itself worth pondering: Armagh preserves genuine, decipherable scribal colophons naming a real, datable scribe; Dimma’s colophons were doctored to fabricate an association with a legendary one.

The Stowe Missal (Royal Irish Academy MS D II 3) supplies the last important comparison. It contains a pocket-sized gospel of John bound with a missal, and it is directly relevant to Dimma in two respects. First, it too carries a liturgical text alongside gospel material, illuminating the way small Irish books blurred the line between gospel book and service book. Second, the palaeography of the Stowe John has been compared directly with the John of the Book of Dimma in the recent scholarly debate — Bart Jaski’s work engages both — so the two manuscripts are bound together in the current discussion of Irish scribal practice. The Stowe John, like Dimma’s, appears to have been the work of more than one scribe.

Set against all of these, the Book of Dimma emerges as the largest of the pocket gospels, distinguished by its full set of three evangelist portraits plus an eagle symbol, its five hands, its later liturgical insertion, its doctored colophons and its surviving shrine. It is, in short, an unusually complete witness to the whole life cycle of an Irish gospel book.

Saint Crónán, Roscrea and the Legend of the Book’s Making

The monastery at the centre of this story is Roscrea, in what is now County Tipperary, founded by Saint Crónán in the late sixth or early seventh century. Crónán of Roscrea is a genuinely obscure figure, and it is important to say so plainly. The Dictionary of Irish Biography observes that “very little is known of this seventh-century saint,” that he is frequently confused with other saints of the same common name, and that the surviving recensions of his Latin Life are relatively late — of the eleventh or twelfth century. According to those Lives, Crónán’s father was Odrán, a Munsterman of Éile (Ely O’Carroll), and his mother came from Connacht; he made early foundations in Connacht, then returned to his native district, first settling at a remote spot near Monaincha before building a larger monastery on the highway at Roscrea, a site chosen precisely because the earlier one was too isolated for travellers to find. His death is placed around 619, or in some calendars 640, and his feast is kept on 28 April.

The location of Roscrea is not incidental. The monastery stood at a crossroads on the Slighe Dála, one of the principal ancient routeways of Ireland, and it grew into a place of some importance, with a town developing around it. This was not a remote hermitage but a working monastic settlement integrated into the secular life of its region — a plausible setting for a scriptorium producing serviceable books, and, later, for an institution with the ambition and resources to enshrine a relic.

The legend of the book’s making belongs to Crónán’s hagiographic tradition. In its familiar form — the version recounted in the Life and popularised through John Colgan’s Acta Sanctorum Hiberniae of 1645 and, in English, through William Betham’s Irish Antiquarian Researches of 1826 — Crónán asked a scribe named Dimma to write a copy of the gospels for him. The scribe protested that he could give only a single day to the task. But Crónán, “by divine grace and power,” caused the rays of the sun to shine without ceasing for forty days and forty nights, during which Dimma wrote on continuously, feeling neither weariness nor hunger nor the need for sleep, believing the whole time that only a single day had passed. When he finished and brought the completed gospels to the saint, he learned that forty days had elapsed.

The narrative is a classic hagiographic topos: the miraculous suspension of the natural order to enable the production of a sacred text, glorifying the saint through whose merits the miracle is worked. It must be treated as legend, not history. The palaeography dates the manuscript to a century or more after Crónán’s death; the book was written by five hands, not one; and its “Dimma” colophons are demonstrable later insertions. There is, moreover, a specific and revealing chain of cause and effect here that deserves emphasis: the legend did not grow up around a book that happened to be signed by Dimma. Rather, the evidence strongly suggests the reverse — that a pre-existing legend about Crónán and a scribe called Dimma motivated the deliberate alteration of the manuscript’s colophons in the tenth or eleventh century, so that the community’s oldest gospel book could be identified as the miraculous book of the story. The legend made the forgery, and the forgery then seemed to confirm the legend. It is a small, self-reinforcing circle of the kind that hagiographic culture readily produced.

The Liturgical Addition: An Office for the Sick

Between the gospels of Luke and John, on pages 99 to 103, the Book of Dimma contains a text that has nothing to do with the gospels: an order for the Unction and Communion of the Sick, the rite for the visitation of the sick and dying, sometimes referred to as the missa de infirmis. This is not part of the original book. On palaeographic grounds it is generally regarded as a later addition, most often dated to the ninth century, and it is written in a strikingly different format from the gospels — in a single column spanning the full width of the page, rather than the two columns of the gospel text, and in a larger, less dense script.

The layout is functional. A single-column, larger, more legible script is exactly what a priest would want in a text meant to be read aloud, at a sickbed, perhaps in poor light. The addition thus records a change in the book’s use. A gospel book, perhaps first intended for private study or personal devotion, was adapted for pastoral service — carried out from the monastery to the homes of the sick and the dying to administer prayers, unction and viaticum. This is, incidentally, the context that most literally justifies the term “pocket book”: a small volume that could be carried on the person to where it was needed.

The Latin text of the office was transcribed and printed by F. E. Warren in his Liturgy and Ritual of the Celtic Church (Oxford, 1881), and it is of considerable interest to liturgical historians as a witness to early Irish practice. The nineteenth-century commentators already noticed one striking feature: the rite gives extreme unction before the viaticum, the reverse of the later Roman order. This reflects genuinely archaic usage — the anointing of the sick preceding the final communion — before the sequence was standardised the other way in the Western church. The office in the Book of Dimma is therefore a valuable fragment of the liturgy of the early Irish church, and its presence transformed the manuscript from a gospel book into something closer to a priest’s working manual.

R. I. Best, in his 1926 study, associated the hand that added the office with the same late tenth- or early eleventh-century activity that produced the colophon alterations, though the more common view dates the liturgical addition earlier, to the ninth century. This is a point of genuine uncertainty in the scholarship and should be flagged as such: the addition is later than the original gospels, but exactly how much later, and whether it was contemporary with the colophon forgery, is not settled.

The Cumdach: Enshrining the Book

By the twelfth century, the Book of Dimma had ceased to be, in any ordinary sense, a book. It had become a relic, and it was enclosed in a cumdach — an Irish book shrine, a decorated metal box designed to hold and protect a venerated manuscript. The cumdach is a distinctively Irish form; such shrines are typically much later than the books they contain, often by several centuries, and they were made not to be opened but to preserve and display the sanctity of their contents. Other famous examples enclose the Book of Mulling, the Cathach of Saint Columba and the Stowe Missal.

The shrine of the Book of Dimma survives, and it too has had many lives. It is made of bronze and silver, set with blue stone cabochons (possibly, but not certainly, lapis lazuli) and blue glass beads, with the remains of niello inlay, and it measures 19 by 16.1 by 5 centimetres. Its construction and decoration span centuries. The core of the shrine dates to the twelfth century; the interlaced animal openwork on the back is in a style that originated in the early twelfth century. But the shrine was significantly altered later — in particular in the late fourteenth or early fifteenth century — and again in the nineteenth century, when much of the framing, the cross, the settings and the bronze backing of the interlace were added or renewed. It is, in other words, a composite object, and any description must layer its dating accordingly rather than treating it as a single twelfth-century artefact.

The most important documentary feature of the shrine is its inscription, which runs along the border of the front. It reads: TATHEVS O KEARBVILL REI DE ELV MEIPSVM DEAVRAVIT: DOMINVS DOMNALDVS O CVANAIN CONVERBIVS VLTIMO MEIPSVM RESTAVRAVIT; TOMAS CEARD DACHORIG INMINDSA. Translated, this states, in the voice of the shrine itself: “Thadeus Ua Cearbaill, king of Éile, had me gilt; the lord Domnall Ua Cuanáin, coarb, was the last to restore me; Tomás the craftsman fashioned this shrine.” The inscription is remarkable in several respects. It personifies the object, which speaks in the first person (“me”), and — as scholars have noted — it grants that personhood to the manuscript rather than to the shrine, treating the book as an agent in its own right. It names a royal patron, a religious restorer and, unusually, the craftsman who made it.

The identification of these figures is itself instructive, and it corrects a long-standing confusion in the older literature. The nineteenth-century antiquarian tradition (and works following it) placed the enshrining in the mid-twelfth century, under an O’Carroll, Lord of Ely, and dated a restoration by “Donald O’Cuanain, Coadjutor Bishop of Killaloe” to 1230. Modern scholarship, above all the detailed study of the shrine by Raghnall Ó Floinn (“The Shrine of the Book of Dimma,” in Éile: Journal of the Roscrea Heritage Society, volume i, 1983, pages 25–39), reads the inscription as referring to the later refurbishment: the Tadhg Ó Cearbhaill (Thaddeus O’Carroll) named as patron is most plausibly Tadhg Ailbhe Ó Cearbhaill, king of Éile (died 1407), described in the Dictionary of Irish Biography as probably the most powerful and well-known king of Éile in the middle ages, and remembered as a patron of the arts and protector of the poets of Ireland and Scotland. On this reading, the gilding recorded in the inscription belongs to a campaign of about 1380–1407, not to the original twelfth-century enshrining. The distinction matters: the shrine was first made in the twelfth century, but the surviving inscription commemorates a much later restoration. Domnall Ua Cuanáin, styled coarb (comarba, the hereditary successor or heir of the founder), belonged to the Ua Cuanáin family who held the hereditary custodianship of Roscrea’s ecclesiastical inheritance — the same coarbal family in whose hands, according to the Dictionary of Irish Biography, the enshrined book lay by the fourteenth century.

The timing of the original twelfth-century enshrining is not accidental. This was precisely the period when Roscrea briefly achieved the status of an independent episcopal see. The diocese of Roscrea was recognised, if fleetingly, in the great reorganisation of the Irish church in the twelfth century — it is referred to at the Synod of Kells in 1152 — before being absorbed into the diocese of Killaloe within a couple of decades; there were only two known bishops of Roscrea, Ísác Ua Cuanáin (died 1161) and a bishop Ua Cerbaill (died 1168). A community pressing its claim to diocesan and pilgrimage status needed relics associated with its founder, and a Romanesque church dedicated to Crónán was built to draw pilgrims. In this context the enshrining of the gospel book — already, thanks to the doctored colophons, identified as the miraculous book of Crónán and Dimma — makes perfect sense as an assertion of institutional prestige and antiquity. The Dictionary of Irish Biography makes exactly this connection, noting that the book was enshrined in the twelfth century “probably during the short period when Roscrea was an episcopal see.”

There is a poignant irony in the enshrining, and recent scholarship has drawn it out. To seal the book inside its cumdach, the shrine was, quite literally, nailed shut, and the nails were driven through the pages of the manuscript itself. Bernard Meehan, examining the book, observed that considerable force was required to pierce the nails through the parchment, indicating a deliberate effort to nail the manuscript closed; the nail holes, some tinged green with corrosion from the metal, are visible in the evangelist portraits. The object made to protect the book damaged it, and rendered it permanently unusable as a book. The manuscript’s spiritual value as a relic had entirely superseded its practical value as a text: a book that could no longer be opened or read, but which was believed to act, as relics do, without being seen. This is the final transformation in the life of the Book of Dimma — from working gospel book, to pastoral manual, to named relic, to sealed sacred object.

Provenance: From Roscrea to Trinity College

The later history of the Book of Dimma is a mixture of documented transactions and legendary embellishment, and the two must be kept apart.

The documented outline is as follows. The manuscript and its shrine are presumed to have remained at Roscrea through the medieval period, in the custody of the coarbal Ua Cuanáin family. What happened at the dissolution of the monasteries in the sixteenth century is not clearly recorded, and the book then vanishes from view for a considerable period. It resurfaces in north Tipperary at the end of the eighteenth century. The Trinity College catalogue traces a chain of ownership from that point: it belonged to William Meagher, a Roman Catholic priest of Roscrea; passed by descent to the Reverend Philip Meagher, Roman Catholic vicar of Nenagh; was lent to a Dr Thomas Harrison of Nenagh; and was then unlawfully sold by Harrison, without permission, to Henry Monck Mason, a librarian at the King’s Inns in Dublin, sometime before 1816. Mason exhibited it — to the Society of Antiquaries of London and to the Royal Irish Academy, to which it was presented on 24 May 1819, accompanied by a paper Mason wrote describing “a rich and ancient Box, containing a Latin copy of the Gospels.” The manuscript was then acquired by the antiquary Sir William Betham, sometime before 1826; Betham attempted to sell it at auction on 4 July 1830 (as lot 444); and it was finally purchased from him by Trinity College Dublin on 29 March 1836, for a sum recorded in the college’s own catalogue as either £150 or £200. It has remained at Trinity ever since.

Around this documented spine there grew a legend of rediscovery that is worth examining critically. The popular story, repeated in many nineteenth-century and later accounts, holds that the book was discovered in 1789, hidden among the rocks of the Devil’s Bit Mountain in County Tipperary — in some versions by boys hunting rabbits — carefully concealed and perfectly preserved, and then passed through the hands of a priest and Dr Harrison before entering the antiquarian market. This tale has an appealing romance to it, and it neatly bridges the gap between the dissolution and the book’s eighteenth-century reappearance. But it should be treated with real caution. There is, as several commentators have noted, a serious problem with the claim: a parchment manuscript could not plausibly have survived, undamaged, hidden outdoors in the Irish climate for over two centuries. The condition of the book is inconsistent with the story of its finding. The Devil’s Bit rediscovery is best regarded as a piece of local folklore — a legend of concealment and recovery of the kind that frequently attaches to venerated objects — rather than as documented fact. (A related persistent error, found in some tourist and secondary sources, states that the book now resides in the National Museum of Ireland; it does not — it is, and has been since 1836, in Trinity College Dublin. The confusion probably arises because so many Irish cumdachs and reliquaries are held in the National Museum.)

It is also worth correcting the frequently muddled account of the transfer to Trinity. Some sources credit the purchase to James Henthorn Todd, later a celebrated Trinity librarian; the institutional record is clearest simply in stating that the college bought the book from Betham in 1836. And the tradition that the book “was found, with its shrine,” reminds us that manuscript and cumdach travelled together through this whole later history and remain together at Trinity today — an unusually complete survival of book and shrine as a single object.

The Book of Dimma in the Scholarship of Insular Art

The Book of Dimma occupies a particular niche in the historiography of Insular art, and its changing scholarly fortunes are themselves illuminating. For much of the nineteenth and early twentieth centuries it was known chiefly through the antiquarian and liturgical literature — through Betham, O’Curry, and the liturgical studies of Warren — and through the romantic frame of the Crónán legend and the Devil’s Bit rediscovery. The decisive turn towards critical study came with Best’s 1926 exposure of the colophon alterations, which shifted the manuscript from being a supposed seventh-century relic to being an eighth-century book with a fascinating history of tampering.

McGurk’s 1956 article gave the book its place within a defined class, the Irish pocket gospel book, and thereby integrated it into the comparative study of Insular manuscripts. It was catalogued authoritatively in the standard surveys — in E. A. Lowe’s Codices Latini Antiquiores for its script, and in J. J. G. Alexander’s Insular Manuscripts, 6th to the 9th Century (1978), the first volume of the Survey of Manuscripts Illuminated in the British Isles, for its decoration. It features in the broad narratives of Insular gospel-book art, such as George Henderson’s From Durrow to Kells, and in the treatment of Irish art in the Art and Architecture of Ireland volumes, where Bernard Meehan contributed the entry on the manuscript.

The most productive recent scholarship, however, has come from the technical and codicological turn associated with the Trinity College early Irish manuscripts project of the 2010s. The digitisation of the book, the conservation work of John Gillis, the pigment analysis of Bioletti and Smith, and the detailed reassessment of hands and structure by Gillis and Meehan in An Insular Odyssey (2017) together transformed what could be said about the physical object. The renewed debate over the scribe Dianchride — Gillis and Meehan’s argument set against Bart Jaski’s counter-argument in Peritia (2021) — shows that even a small, much-studied book can generate genuinely open questions. And the interpretive work of scholars interested in the “social life” of objects has made the Book of Dimma something of a model case for thinking about how medieval books changed function and meaning over their long lives.

If the Book of Kells is the supreme example of the Insular gospel book as a work of display and theological grandeur, the Book of Dimma is, in a sense, its necessary complement: the ordinary, working, human book, made economically by several hands, adapted for pastoral use, doctored to serve institutional ambition, and finally sealed away as a relic. It is precisely because it is not a masterpiece in the Kells mould that it tells us so much. It is a window onto the practical world of the early Irish scriptorium and onto the ways in which such a community used, altered and venerated its books.

Conclusion: What the Small Book Teaches

The Book of Dimma is a manuscript whose importance is inversely proportional to its size. In 74 small leaves it contains the four gospels, a rite for the dying, the names of its makers both genuine and forged, the traces of five hands, and the physical scars of the shrine that both honoured and destroyed it. Read carefully, and with the legends set aside, it offers an unusually complete account of the life of an early Irish gospel book.

The documented core is secure: an eighth-century Irish pocket gospel book, written at or for Roscrea by several scribes, one of whom — preserved in the intact Luke colophon — was named Dianchride; a book later fitted with an office for the sick, then doctored in the tenth or eleventh century to bear the name Dimma and thereby claim identity with the miraculous gospel book of Saint Crónán’s Life; a book enshrined in the twelfth century as Roscrea pressed its claims to episcopal status, its cumdach later restored under Tadhg Ó Cearbhaill around 1400; and a book that resurfaced in Tipperary in the eighteenth century and was bought by Trinity College Dublin in 1836, where it remains with its shrine.

The legends are equally instructive, precisely as legends: the forty-day miracle, the single-day copying, the seventh-century date, the identification of the scribe with a bishop of Connor, the Devil’s Bit rediscovery. Each of these has been repeated as fact, and each dissolves under scrutiny into folklore, hagiographic topos, or antiquarian error. That they attached so firmly to this particular book is not an accident: the doctoring of the colophons was a deliberate act designed to make the legend stick, and it succeeded so well that it took a twentieth-century palaeographer to peel it back. The Book of Dimma is, in the end, a lesson in reading — in distinguishing the book from the story told about the book, and in recognising that the two, though they must be separated, are also inseparably part of the same history.