| Surname | Individuals |
|---|---|
|
Ó Coileáin
|
1 |
|
O Collaine
|
2 |
|
O Collane
|
1 |
|
O Cullaine
|
1 |
|
o Cullane
|
2 |
|
O Cullanie alias O Cullaine
|
1 |
|
Ó Drisceoil
|
1 |
|
O Mahoni
|
1 |
|
Ó Muirthile
|
2 |
|
O'Crowley
|
2 |
|
O'Cullane
|
13 |
|
O'Donovan
|
1 |
|
O'Driscol
|
1 |
|
O'Driscoll
|
15 |
|
O'Hurley
|
1 |
|
…
O'Hurly |
3 1 4 |
|
O'Leary
|
1 |
|
O'Mahony
|
1 |
|
O'Murly
|
2 |
|
Odriscol
|
3 |
|
Ogg
|
1 |
|
Ohurleo
|
1 |
|
Orr
|
1 |
|
Ortega
|
1 |
|
Owen
|
13 |
|
Owens
|
4 |