| Surname | Individuals |
|---|---|
|
O'Bricie
|
1 |
|
O'Brien
|
1 |
|
O'Bumsawin
|
1 |
|
O'Conner
|
4 |
|
O'Connor
|
1 |
|
O'Kazen
|
1 |
|
O'Marra
|
5 |
|
O'Neil
|
2 |
|
O'Neill
|
4 |
|
O'Peh
|
1 |
|
O'Reef
|
1 |
|
O'Reilly
|
1 |
|
O'Rielly
|
8 |
|
O'Riley
|
1 |
|
OConner
|
1 |
|
Odell
|
11 |
|
Oderkirk
|
18 |
|
Odishooe
|
7 |
|
Oesterman
|
1 |
|
Ogden
|
3 |
|
Ogle
|
3 |
|
Ohki
|
1 |
|
Olayee
|
1 |
|
Oldaker
|
1 |
|
Oldswager
|
2 |
|
Oligney
|
1 |
|
Oliver
|
8 |
|
Olmstead
|
7 |
|
Olney
|
2 |
|
Olsen
|
2 |
|
Olson
|
1 |
|
Oney
|
1 |
|
Ordway
|
7 |
|
Orissa
|
1 |
|
Orr
|
1 |
|
Osborn
|
10 |
|
Osmond
|
2 |
|
Ostazeski
|
6 |
|
Otth
|
1 |
|
Otto
|
1 |
|
Ouderkirk
|
2 |
|
Ouellette
|
1 |
|
Oulds
|
1 |
|
Oviatte
|
2 |
|
Owens
|
3 |
|
Oxtoby
|
1 |