An Leabhar Breac

In the 16th century, the manuscript was in the possession of the Mac Egans of Duniry, hence the older title Leabhar Mór Dúna Doighre. In 1629, the manuscript was held in the convent of Kinalehin, County Galway.

It was consulted by Mícheál Ó Cléirigh, brother of the Four Masters, who copied pp. 272–7. The book passed into the possession of Éamon Ó Ceallaigh (Co. Roscommon) in 1732, then of Dr. John O'Brien by 1768 and finally of Cornelius O'Daly (Mitchelstown, Co. Cork). The Royal Irish Academy acquired the first volume in 1789, when General Charles Vallancey purchased it for the academy for 3 guineas from Cornelius O'Daly. O'Daly also owned the second volume, which comprises nine leaves, but was unaware that it belonged to the larger volume. In 1789, this volume was acquired by Chevalier O'Gorman, by George Smith of College Green in the next century and by the Academy sometime after 1844. The manuscript is held in the Academy's library in Dublin to this day.[4]

The manuscript is of a large size, measuring 40.5 cm x 28 cm, which makes it the largest Irish vellum manuscript to have been written by a single scribe.[5] It contains 40 folios, which are written in double columns. Capitals are decorated in a simple style, with some letters having been interwoven with zoomorphic patterns and coloured in red, vermilion, yellow and blue. There are two drawings, a flower-like diagram on p. 121 and a drawing of the Crucifixion on p. 166.[6]

The manuscript consists almost entirely of religious writings in Latin and Middle Irish. It includes homiletic Lives of Saint Patrick, Saint Columba, Saint Brigid, Saint Cellach, and Saint Martin, the earliest version of Félire Óengusso ("Martyrology of Óengus"), the Rule of the Céli Dé, Aislinge Meic Con Glinne ("The Vision of Mac Conglinne"), a version of Fís Adamnáin ("The Vision of Adamnán"), Saltair na Rann, Stair Nicomeid ("Gospel of Nicodemus"), Amra Choluim Chille, a Marian litany, and various ecclesiastical legends, hymns, catecheses and homilies. Exceptions to the predominantly religious contents are Sanas Cormaic ("Cormac's Glossary") and a history of Philip of Macedon and Alexander the Great.[7]

The numerous notes which Murchadh Ó Cuindlis jotted into the margins afford us a unique glimpse of the circumstances of the writing process. These range from everyday details like a cat straying about or a robin singing in a beautiful voice to a nearby pillage in Lorrha by a certain Murchad Ua Madagáin. A persistent object of complaint for the writer is the weather, in particular the cold.[8] Based on the notes, Tomás Ó Concheanainn has been able to reconstruct the time span in which certain sections had been written. For instance, it took the scribe about 6 weeks to write 35 pages (pp. 141–75), while some parts proved more challenging, such as a column for a poem with interlinear glosses, which cost him a day.[8]

• Irish annals

• Welsh, Robert. Oxford Concise Companion to Irish Literature. 1996. ISBN 0-19-280080-9
• O'Neill, Timothy. "Leabhar Breac." In Medieval Ireland. An Encyclopedia, ed. Seán Duffy. New York, 2004. 266-7.

• Anonymous = Joseph Ó Longáin (fasc) and J.J. Gilbert (ed.). Leabhar Breac, the Speckled Book, otherwise styled Leabhar Mór Dúna Doighre, the Great Book of Dun Doighre. Dublin, 1876. Lithographic facsimile edition.[1]
• Irish Script on Screen (DIAS): images and description of Leabhar Breac.
• Atkinson, Robert (ed. and tr.). The Passions and the Homilies from Leabhar Breac: Text, Translation, and Glossary. Todd Lecture Series II. Dublin, 1887. Edited text available online from CELT.
• Betha Phatraic "Life of St Patrick" (Leabhar Breac pp. 24b-29b), ed. and tr. Whitley Stokes, Three Middle-Irish Homilies. Calcutta, 1877. Text edition and translation available online from CELT.
• Rule of the Céli Dé (9b-12b), ed. E.J. Gwynn. In The Rule of Tallaght. Hermathena 44, Second Suppelement. 1927.
• Greene, David and Frank O’Connor (eds. & trs.). A golden treasury of Irish poetry, A.D. 600 to 1200. London: Macmillan, 1967.

• Bernard, J.H. "On the citations from scripture in the Leabhar Breac." Transactions of the Royal Irish Academy 30 (1893): 321-4.
• Egan, J.J. and Egan, M.J. History of Clan Egan. The birds of the forest of wisdom. Ann Arbor, 1979. 59-67.
• Mulchrone, Kathleen et al. Catalogue of Irish manuscripts in the Royal Irish Academy. Dublin, 1943. Fasc. 27.
• Ó Concheanainn, Tomás. "The scribe of the Leabhar Breac." Ériu 24 (1973): 64-79.
• Ritmueller, J. "The Hiberno-Latin Background of the Leabhar Breac Homily "In Cena Domini"." Proceedings of the Harvard Celtic Colloquium 2 (1982): 1-10.
• Haubrichs, Wolfgang. "Die altlateinische Gallicanus-version (Gall.) der Georgslegende und ihr Reflex im 'Leabhar Breac'." In Ireland and Europe in the early Middle Ages. Texts and transmission / Irland und Europa im früheren Mittelalter. Texte und Überlieferung, ed. Próinséas Ní Chatháin and Michael Richter. Dublin: Four Courts, 2002. 170-85.

• Scéla. Catalogue of medieval Irish narratives & literary enumerations
• The Lebar Brecc Tractate on the Canonical Hours, ed. R.I. Best.
• Regula Mochuta Rathin, ed. K. Meyer.
• The Mothers’ Lament at the Slaughter of the Innocents, ed. K. Meyer.
• Imchlód Aingel (Aingil Dé dom dín), ed. T.P. O’Nolan.
• Die Kreuzeslegenden im Leabhar Breac - Inaugural-Dissertaion zur Erlangung de Doctorwuerde (in German) By Gustav Schirmer, St. Gallen, 1886