A manuscript of Geoffrey Keating’s Foras feasa ar Éirinn.
- s. xvii
- Seán mac Torna Ó Maoil Chonaire
A case of John O’Donovan’s collection of papers, donated by him in 1845.
- s. xv–xix
A single leaf from a medical Irish manuscript (Maynooth MS C 110).
- s. xv
Autograph manuscript of John O’Donovan’s Irish grammar.
- s. xix
Seven leaves containing Dubhaltach Mac Fhir Bhisigh’s legal glossary (written c.1660); with an alphabetically arranged transcript by Eugene O’Curry made in 1840.
- c.1660
Printed copy of Charles Vallancey’s Prospectus of a dictionary of the language of the Aire Coti (1802); with numerous manuscript additions by Vallancey.
- s. xix
- Charles Vallancey
A manuscript of Geoffrey Keating’s Trí bior-ghaoithe an bháis and Foras feasa ar Éirinn.
- s. xvii
- Seán mac Torna Ó Maoil Chonaire
Copy of the Annals of the Four Masters made in 1843 by Owen Connellan from the autograph manuscript; with letter by George Petrie on the history of the exemplar.
- s. xix
- Owen Connellan
A book of prayer intended for use by Catholics of Ireland, including printed pieces.
- s. xix
A copy of Cogad Gáedel re Gallaib and a series of Irish poems, transcribed in 1853 by Eugene O'Curry from Brussels MS 2569-2572.
- s. xix
A copy of Ó Cléirigh’s Irish glossary, made in 1871 by Thomas Connellan; together with a copy of Aonghus Ó Dálaigh’s verse satire on the tribes of Ireland (known elsewhere as Muintir Fhiodhnacha na mionn).
- s. xix
Copy of the Tripartite Life of St Patrick, made in 1849 by W. M. Hennessy from a transcript by Eugene O'Curry, which itself was made from the copy in Egerton 93 (except for the first four pages, which were taken from Rawl. B. 512).
- s. xix
- 1737
- Donnchadh Ó Conuill
- s. xviii
- Labras Ó Thárann
A collection of prose and verse in Irish, written by Liam de Roisde in the years 1777-81.
- 1777–81
Miscellaneous collection of poetry and prose, mostly in Irish.
- s. xviii
- s. xviii
- Henry O'Brien
Three collections of Irish prose and verse, the first two written by John Roche and the final one (dated 1705) by Patrick O’Hehir.
- s. xviii
Cath Finntrágha, Irish genealogies, etc., written by Diarmuid Ó Muirche in c.1782.
- c.1782
- Diarmuid Ó Muirche
Collection of songs in Irish, dated 1770 and written by one Peadar Ó Fehín.
- s. xviii
- Peadar Ó Fehín
- 1714-1715
- Muiris Ó Nuabha
Autograph manuscript of John O'Donovan's edition of the poem Brónach ollamh déis a rígh (ascr. to Urard mac Coise) from TCD 1419 (H 6. 15). In the general catalogue of Trinity College, Dublin (1900), the manuscript is indexed twice, as nos. 1175 and 1420.
- s. xix
- John O'Donovan