Residents of Tuckersmith — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 10 | obrien | anna | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 56 |
| 20 | obrien | cornelius | M | 53 | Roman Catholic | Irish | Ireland | No Occupation Listed | 75 |
| 15 | obrien | david | M | 35 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 75 |
| 16 | obrien | ellen | F | 30 | Roman Catholic | Irish | Ontario | No Occupation Listed | 75 |
| 8 | obrien | henry | M | 51 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 56 |
| 17 | obrien | mary | F | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 75 |
| 9 | obrien | maryann | F | 45 | Roman Catholic | Irish | Ontario | No Occupation Listed | 56 |
| 18 | oconnel | hannah | F | 60 | Roman Catholic | Irish | Iceland | No Occupation Listed | 238 |
| 2 | oconnell | jane | F | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 15 |
| 17 | oconnell | peter | M | 67 | Roman Catholic | Irish | Iceland | Labourers nfs | 238 |
| 18 | oldfield | ellen | F | 19 | Anglican | Irish | Ontario | No Occupation Listed | 35 |
| 19 | oldfield | fanny | F | 17 | Anglican | Irish | Ontario | No Occupation Listed | 35 |
| 14 | oldfield | jane | F | 56 | Anglican | Irish | Ireland | No Occupation Listed | 35 |
| 16 | oldfield | john | M | 29 | Anglican | Irish | Ontario | Farmers, general and nfs | 35 |
| 17 | oldfield | mary | F | 21 | Anglican | Irish | Ontario | No Occupation Listed | 35 |
| 15 | oldfield | susan | F | 34 | Anglican | Irish | Ontario | No Occupation Listed | 35 |
| 13 | oldfield | william | M | 59 | Anglican | Irish | Ireland | Farmers, general and nfs | 35 |
| 23 | oneil | della | F | 0 | Presbyterian | Irish | Ontario | No Occupation Listed | 10 |
| 22 | oneil | elisabeth | F | 26 | Presbyterian | German | Ontario | No Occupation Listed | 10 |
| 25 | oneil | francis | M | 19 | Presbyterian | Irish | Ontario | No Occupation Listed | 10 |
| 21 | oneil | william | M | 29 | Presbyterian | Irish | Ontario | Saddler and harness maker | 10 |