| Surname | Spouses |
|---|---|
|
O'Connor
|
1 |
|
O'Donnell
|
2 |
|
O'Hara
|
2 |
|
O'Hey
|
3 |
|
O'Neill
|
3 |
|
ORR
|
1 |
|
Oakley
|
2 |
|
Oakman
|
3 |
|
Oakton
|
1 |
|
Ogilby
|
5 |
|
Ogilvie
|
1 |
|
Old
|
2 |
|
Olive
|
2 |
|
Oliver
|
7 |
|
Onslow
|
1 |
|
Onslow-Graham
|
3 |
|
Oram
|
2 |
|
Organ
|
1 |
|
Orme
|
1 |
|
Ormiston
|
1 |
|
Orpen
|
53 |
|
Orton
|
2 |
|
Osborn
|
7 |
|
Osborne
|
7 |
|
Osman
|
1 |
|
Osmond
|
1 |
|
Ovenell
|
2 |
|
Overend
|
1 |
|
Overton
|
1 |
|
Overy
|
6 |
|
Ovitts
|
1 |
|
Owen
|
4 |
|
Owens
|
1 |
|
Owles
|
1 |
|
Oxborough
|
1 |
|
Oxford
|
1 |
|
Oxlade
|
1 |
|
Oxley
|
1 |