Surname: O'Leary | Name index 9 people Arthur Valentine O'Leary * 1997 Evelyn Mary Hamilton O'Leary Hans Nieter O'Leary Sir Humphrey Francis O'Leary Lettice O'Leary * 1994 Mary O'Leary Narcisa Emília O'Leary * 1790 Patrick O'Leary William O'Leary Surname