- s. xviii
- Mícheál Ó Longáin
- s. xviii/xix
- s. xix
- Mícheál Óg Ó Longáin, Peadar Ó Longáin
Catalogue of manuscripts in the library of Edward O’Reilly.
- s. xix2/4
- Edward O'Reilly
Facsimile transcript of the Book of Lismore produced by Eugene O'Curry for the Royal Irish Academy, with the assistance of John O'Donovan.
- Eugene O'Curry
Transcript of the Book of Lismore made for the Royal Irish Academy by Seosamh Ó Longáin in 1868.
- Seosamh Ó Longáin