Residents of Toronto Gore — Sub-district E, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 3 | obrien | david | M | 19 | Roman Catholic | Irish | England | river drivers | 91 |
| 20 | odlum | edward | M | 58 | Primitive Methodist | Irish | England | Farmers, general and nfs | 42 |
| 24 | odlum | edward | M | 0 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 42 |
| 25 | odlum | isaac | M | 25 | Primitive Methodist | Irish | Ireland | Farmers, general and nfs | 42 |
| 1 | odlum | james | M | 20 | Primitive Methodist | Irish | Ontario | Farmers, general and nfs | 42 |
| 22 | odlum | leonard | M | 27 | Primitive Methodist | Irish | Ontario | Farmers, general and nfs | 42 |
| 23 | odlum | lisie | F | 25 | Primitive Methodist | Irish | Ireland | No Occupation Listed | 42 |
| 21 | odlum | sarah | F | 62 | Primitive Methodist | English | England | No Occupation Listed | 42 |
| 3 | odonnell | bridget | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 6 | odonnell | francis | F | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 2 | odonnell | hanorah | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 4 | odonnell | james | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 22 | odonnell | jeremiah | M | 21 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 9 |
| 20 | odonnell | john | M | 45 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 9 |
| 24 | odonnell | john | M | 17 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 9 |
| 1 | odonnell | margaret | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 21 | odonnell | mary | F | 38 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 25 | odonnell | mary | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 5 | odonnell | teresa | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 23 | odonnell | william | M | 19 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 9 |
| 18 | ohearn | mary | F | 65 | Roman Catholic | Irish | Ontario | No Occupation Listed | 118 |
| 22 | oleary | bridget | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 17 |
| 20 | oleary | catherine | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 17 |
| 23 | oleary | francis | M | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 17 |
| 19 | oleary | john | M | 17 | Roman Catholic | Irish | Ontario | Pedlars and hawkers | 17 |
| 24 | oleary | mary | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 17 |
| 17 | oleary | michael | M | 43 | Roman Catholic | Irish | Ontario | Blacksmiths | 17 |
| 18 | oleary | susan | F | 42 | Roman Catholic | Irish | Ireland | No Occupation Listed | 17 |
| 25 | oleary | susannah | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 17 |
| 21 | oleary | william | M | 13 | Roman Catholic | Irish | Ontario | Blacksmiths | 17 |
| 13 | osborne | alice | F | 16 | Roman Catholic | Irish | Ontario | Servants nfs | 84 |
| 15 | osborne | annie | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 18 | osborne | james | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 11 | osborne | john | M | 40 | Roman Catholic | Irish | Ontario | river drivers | 84 |
| 17 | osborne | john | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 19 | osborne | margaret | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 12 | osborne | mary | F | 38 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 16 | osborne | mary | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 14 | osborne | thomas | M | 14 | Roman Catholic | Irish | Ontario | river drivers | 84 |