O'Bannon Andy
O'Brien David
O'Brien G. M.
O'Callaghan Eimear
O'Connell Donal
O'Connell Ross
O'Connor Denjoe
O'Dea Fergus
O'Driscoll Donal
O'Dwyer J.
O'Hara Clare
O'Keeffe D.
O'Loughlin Martin
O'Loughlin Michael J.
O'Neill Christopher M.
O'Raifeartaigh Lochlain
O'Raifeartaigh Lochlainn
O'Reilly D.
O'Rourke M. J.
Obadia Nathaniel