This file includes biographies, obituaries and other material relating to the following people of interest: Tomás Ó Concheanainn ("Tomás Bán", "Níosáirde"); Séamas Ó Conghaile; Seán Ó Conghaile; Daniel Corkery.

Tag / Ref: G60/26/8/16

This file includes biographies, obituaries and other material relating to the following people of interest: Thomas O’Crohan; Conchubhar Ó Cuileanáin; Micheál Ó Cuileanáin (Micheál, Eibhle); Fr Micheál Ó Dálaigh; Pádraig Ó Dálaigh; Seán Ó Dálaigh ("Common Noun"); Máirtín Ó Direáin; Breandán Ó Doibhlin; Niall Ó Dónaill; Bishop Pádraig Ó Dónaill; Seán Ó Donnabháin; Diarmaid Ó Donnabháin Rosa; Tadgh O'Donoghue; Seán Ó Dúbhda.

Tag / Ref: G60/26/8/17

This file includes material relating to Cardinal Tomás Ó Fiach.

Tag / Ref: G60/26/8/19

This file includes biographies, obituaries and other material relating to the following people of interest: Micheál Breathnach; Father Pól Breathnach; Cathal Brugha; Liam Bulfin; Charles Percy Bushe; Séamas Caomhánach; Roger Casement; John Keegan Casey; Geoffrey Keating; Claude Albert Chavasse; Kathleen Clarke; Tom Clarke; Euseby Digby Cleaver; Reverend Maxwell H Close; Dáithí Coimín; Micheál Coimín.

Tag / Ref: G60/26/8/2

This file includes biographies, obituaries and other material relating to the following people of interest: Fr Eugene O’Growney; Séamus Ó Grianna ("Máire"); Fr Micheál Ó Grifín; Michael O’Hanrahan; Peadar Ó hAnnracháin; Tadhg Ó hAnnracháin; Breandán Ó hEithir; James Hough ("An Fear Mór").

Tag / Ref: G60/26/8/21

This file includes biographies, obituaries and other material relating to the following people of interest: Fr Michael O’Hickey / Hickey; Blind Liam Ó hIfearnáin; David Greene; Tarlach Ó hUid; Brian O’Higgins; Patrick O'Leary; Fr Peter O’Leary.

Tag / Ref: G60/26/8/22

This file includes biographies, obituaries and other material relating to the following people of interest: Annraoi Ó Liatháin; Brian Ó Luanaigh; Liam Ó Luanaigh; Thomas O’Malley; Tomás Ó Monacháin ("Tomás Ó Mannacháin"); Mícheál Ó Maoláin; Richard Mulcahy; Liam Ó Maolrúnaidhe; Tomás Ó Míocháin; Dónall Ó Móráin; Aindrias Ó Muimhneacháin; Tomás Ó Muircheartaigh.

Tag / Ref: G60/26/8/23

This file includes biographies, obituaries and other material relating to the following people of interest: Fr Lorcán Ó Muirí [Ó Muireadhaigh]; Seán Ó Muirthile; Micheál Ó Murchú ("An Gabha Gaelach"); Séamus Ó Néill; Thomas O’Neill Russell; Brian O’Nolan; Ciarán Ó Nualláin; Fr Gearóid Ó Nualláin; Thomas O’Rahilly; Seán Ó Riada (John Reidy).

Tag / Ref: G60/26/8/24

This file includes biographies, obituaries and other material relating to the following people of interest: Darby Ryan; William Patrick Ryan ("Cara na nUghdar"); Fr Maithiún Ó Riain; Frank Ryan; Seán Ó Riordáin; Michael O'Rourke; Aodh Ó Ruairc

Tag / Ref: G60/26/8/25

This file includes biographies, obituaries and other material relating to the following people of interest: Charles Saunders; Iosef Ó Searcaigh; Dr. Micheál Ó Síocháin; Mícheál Ó Siochfhradha; Pádraig Ó Siochfhradha ("An Seabhac"); Pádraig Ó Snodaigh; Diarmuid Ó Súilleabháin.

Tag / Ref: G60/26/8/26