| Surname | Spouses |
|---|---|
|
O'Braenain
|
2 |
|
O'BRIEN
|
4 |
|
O'CAELLAIDE
|
3 |
|
O'CHEINNSELAIG
|
6 |
|
O'CONNOR
|
1 |
|
O'DOMNAILL
|
2 |
|
O'Dúnlainge
|
9 |
|
O'FAELAIN
O'Fáeláin |
2 4 6 |
|
O'Gairbita
|
2 |
|
O'Morda
|
7 |
|
O'Muiredaig
|
7 |
|
O'NEIL
|
1 |
|
O'Néill
|
10 |
|
O'Nuallain
|
4 |
|
O'Thairmeascain
|
1 |
|
O'TOOLE
|
8 |
|
OBER-LOTHRINGEN
of OBER-LOTHRINGEN |
1 1 2 |
|
des OBOTRITES
|
1 |
|
OENINGEN
|
2 |
|
OFEIGSSON
|
2 |
|
OGLE
|
1 |
|
d'OISY
|
1 |
|
OLAFSDOTTIR
|
1 |
|
OLAFSSON
|
4 |
|
d'ORLÉANS
|
1 |
|
de ORREBY
|
1 |
|
d'ORTHEN
|
1 |
|
OSBORN
|
1 |
|
de OSMUNDESLAWE
|
1 |
|
OSOREZ
|
1 |
|
OTHER
|
1 |
|
OUDART
|
5 |
|
OUTERLEYS
|
3 |
|
OWAIN
|
3 |