| Surname | Individuals |
|---|---|
|
O'Niell
|
1 |
|
Oberkampf
|
1 |
|
Odder
|
2 |
|
Oderberg
|
1 |
|
Odeslo
|
1 |
|
Odizzone
|
1 |
|
Oedeme
|
4 |
|
Offesen
|
3 |
|
Ogisen
|
1 |
|
Ohm
|
9 |
|
Olafsdottor
|
1 |
|
Olafson
|
7 |
|
Olafsson
|
5 |
|
Olavsson
|
1 |
|
Olbech
|
2 |
|
Olbern
|
2 |
|
Oldenborch
|
2 |
|
Oldenburg
|
5 |
|
Oldesloe
|
1 |
|
Olesdatter
|
55 |
|
Olesen
|
90 |
|
Ollesdatter
|
1 |
|
Ollesen
|
1 |
|
Olsdatter
|
4 |
|
Olsdorf
|
10 |
|
Olsdorff
|
3 |
|
Olsdorph
|
1 |
|
Olsdotter
|
1 |
|
Olsen
|
52 |
|
Olsen-Gardsholm
|
2 |
|
Olsson
|
1 |
|
Olufsdatter
|
80 |
|
Olufsen
|
84 |
|
Olufson
|
1 |
|
Omer
|
1 |
|
Öndsson
|
1 |
|
One-Eyed
|
1 |
|
Opdahl
|
1 |
|
Oringe
|
1 |
|
Orm
|
1 |
|
Orning
|
4 |
|
Osmundsen
|
7 |
|
Ost
|
1 |
|
Osten
|
3 |
|
Ostenfeld
|
2 |
|
Ottesdatter
|
34 |
|
Ottesen
|
33 |
|
Ottosdatter
|
4 |
|
Ottosen
|
7 |
|
Otzen
|
2 |
|
Ousdorph
|
1 |
|
Ousen
|
1 |
|
Oustrup
|
1 |
|
Ove
|
1 |
|
Overbech
|
1 |
|
Overbye
|
2 |
|
Overgaard
|
34 |
|
Overlund
|
1 |
|
Ovesdatter
|
11 |
|
Ovesen
|
29 |
|
Oxe
|
1 |
|
Ozpatka
|
1 |