Royal Irish Academy, MS 23 N 10

Dublin, Royal Irish Academy, MS 23 N 10, formerly Betham 145, is a Gaelic–Irish medieval manuscript.

MS 23 N 10 is a late sixteenth-century Irish manuscript currently housed in the Library of the Royal Irish Academy, Dublin. It was formerly in the possession of Sir William Betham (1779–1853).

The manuscript is highly valuable for its compilation of medieval Irish literature, copied in 1575 at Ballycumin, County Roscommon. The responsible scribes were Aodh, Dubhthach, and Torna, three scholars of the Ó Maolconaire (anglicised: O'Mulconry), a learned family also known for compiling Egerton 1782 (British Library) in 1517.^[1]

• Ó Maolconaire
• Ollamh Síl Muireadaigh
• Ó Duibhgeannáin

• Best, R.I. (1954). MS. 23 N 10 (formerly Betham 145) in the library of the Royal Irish Academy. Irish Manuscripts Commission. Facsimiles in collotype of Irish manuscripts 6. Dublin: Stationery Office. Facsimile edition, with descriptive introduction{{cite book}}: CS1 maint: postscript (link)
• Mulchrone, Kathleen; O'Rahilly, T.F.; et al., eds. (1926–70). Catalogue of Irish Manuscripts in the Royal Irish Academy. Dublin. pp. 2769–80 (MS 967).{{cite book}}: CS1 maint: location missing publisher (link)
• Brian Lalor, ed. (2003). The Encyclopaedia of Ireland. Dublin: Gill & Macmillan. ISBN 0-7171-3000-2.
• Mac Dermot, Dermot (1996). Mac Dermot of Moylurg: The Story of a Connacht Family.
• Moody, T.W.; F.X. Martin; Francis John Byrne, eds. (1982). A New History of Ireland VIII: A Chronology of Irish History to 1976 - A Companion to Irish History Part I. ISBN 0-19-821744-7.

• "Manuscript Source Index 23 N 10 - Royal Irish Academy" Bibliography of Irish Linguistics and Literature. School of Celtic Studies, Dublin Institute for Advanced Studies.
• "CODECS Manuscript Catalogue 23 N 10 (967) Royal Irish Academy, Dublin" Collaborative Online Database and e-Resources for Celtic Studies. A. G. van Hamel Foundation for Celtic Studies: Netherlands.
• CELT: Corpus of Electronic Texts
  • Encoded manuscript G301033 in Old Irish: The Dindshenchas of Emain Macha
  • Encoded manuscript G100044 in Middle Irish: Abenteuer Königs Aed Oirdnide
  • Encoded manuscript G301032 in Old Irish: Verba Scáthaige