Eugen O'sullivan to Arthur P O'toole - 1881 Census household returns
- Eugen O'sullivan
- Eugene O'sullivan
- Henry O'sullivan
- Humphrey O'sullivan
- Humphry O'sullivan
- James O'sullivan
- Jane O'sullivan
- Jeremih O'sullivan
- John O'sullivan
- John O'sullivan
- John O'sullivan
- John O'sullivan
- John O'sullivan
- Joseph D O'sullivan
- Luke O'sullivan
- Martin O'sullivan
- Maurice O'sullivan
- Michael O'sullivan
- Michael O'sullivan
- Michael O'sullivan
- Michael O'sullivan
- Michael O'sullivan
- Michael O'sullivan
- Michael O'sullivan
- Owen O'sullivan
- Patrick O'sullivan
- Patrick O'sullivan
- Patrick O'sullivan
- Philip O'sullivan
- T O'sullivan
- Thomas D O'sullivan
- Timothy O'sullivan
- Timothy O'sullivan
- Timothy O'sullivan
- William O'sullivan
- Michael O'tool
- Thomas O'tool
- Agnes O'toole
- Alexander O'toole
- Arthur P O'toole