| A lost landscape : the Geraldine castles and tower houses of the Shannon estuary | Mac Curtain, Margaret | Article in Book | | 1988 |
| A poem of prophecy on Ua Conchobair kings of Connacht | Ó Cuív, Brian | Article in Journal | | 1987 |
| Catalogue of the O'Conor papers | Dunleavy, G. W. (Gareth W.)Dunleavy, J. E. (Janet Egleson) | Article in Journal | | 1973 |
| Dublin innkeepers in a new land | Wright, David | Article in Journal | | 1999 |
| Family memories of Kilmacud | Mulready, Marie | Article in Journal | | 2017 |
| Gaelic reaction to plantation: the case of the O'More and O'Connor lordships of Laois and Offaly, 1570-1603 | Carey, Vincent Patrick | Thesis | | 1985 |
| History and origins of the O'Connors | O'Hara, Martin | Monograph or Collective Volume | The author | 1987 |
| James O'Connor, fenian, and the tragedy of 1890 | Lowth, Cormac | Article in Journal | | 2002 |
| O'Connor : people and places | Weir, Hugh W. L. | Monograph or Collective Volume | Ballinakella | 1994 |
| O'Connor jewellers, 51 Lr Georges Street, Dun Laoghaire | Scudds, C. | Article in Journal | | 1993 |
| O'Connor of Sylan, Co. Galway | Anonymous | Article in Journal | | 1927 |
| Our roots under the rock : the O'Connor family history, 1833-2006 | O'Connor, Mary | Monograph or Collective Volume | An Ríocht | 2006 |
| The inauguration of O'Conor | | Article in Book | | 1961 |
| The O'Connor family of Caherowen, Athenry, Co. Galway | Ó Deirg, Íosold | Article in Journal | | 1998 |
| The O'Connor papers | Dunleavy, G. W. (Gareth W.)Dunleavy, J. E. (Janet Egleson) | Monograph or Collective Volume | University of Wisconsin Press | 1977 |
| The O'Connor tragedy of 1890 | Lowth, Cormac | Article in Journal | | 2001 |
| The O'Connors | Pierce, Thomas | Article in Journal | | 1956 |
| The O'Connors of Swinford County Mayo : a family history | O'Connor, Patrick | Monograph or Collective Volume | Old House | 1998 |
| The O'Conor papers : their significance to genealogists | Dunleavy, G. W. (Gareth W.) | Article in Journal | | 1976 |
| The O’Connor septs | Murphy, Seán | Article in Journal | | 1995 |
| The royal O'Connors of Connaught | O'Connor, Patrick | Monograph or Collective Volume | Old House Press | 1997 |