1 O'Sullivan;   (David Robert O'Sullivan)
2 Osborne;   (Geoffrey Osborne Rabone)
3 Overton;   (Guy William Fitzroy Overton)
4 OBrien;   (Iain Edward OBrien)
5 O'Brien;   (Iain Edward O'Brien)
6 Oram;   (Jacob David Philip Oram)
7 Owen;   (Martin Owen Kain)
8 Owens;   (Michael Barry Owens)
9 Ollie;   (Ollie Robert Newton)
10 Oscar;   (Oscar Robert Montgomery)
11 Owen;   (Owen Clifford Paul)
12 Owen;   (Richard Owen Collinge)
13 ODonnell;   (Robert Roux ODonnell)
14 O'Connor;   (Shayne Barry O'Connor)
15 O'Rourke;   (William Peter O'Rourke)