Residents of Toronto, Township — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 22 | oconnor | catharine | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 21 | odonnell | mary | F | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 7 | ogden | william | M | 78 | Methodist | English | Ontario | Farmers, general and nfs | 79 |
| 7 | ohara | dorothea | F | 81 | Anglican | Irish | Ireland | No Occupation Listed | 113 |
| 9 | oleary | daniel | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 33 |
| 7 | oleary | edward | M | 27 | Roman Catholic | Irish | Ontario | Agent nfs | 33 |
| 8 | oleary | honora | F | 23 | Roman Catholic | Irish | Ontario | No Occupation Listed | 33 |
| 6 | oleary | mary | F | 63 | Roman Catholic | Irish | Ireland | No Occupation Listed | 33 |
| 5 | oleary | timothy | M | 74 | Roman Catholic | Irish | Ireland | No Occupation Listed | 33 |
| 10 | oliphant | aaron | M | 34 | Episcopal Methodist | Dutch | Ontario | Farmers, general and nfs | 150 |
| 13 | oliphant | alexis | M | 7 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 150 |
| 3 | oliphant | alfred | M | 33 | Episcopal Methodist | Dutch | Ontario | Farmers, general and nfs | 140 |
| 7 | oliphant | alice | F | 32 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 179 |
| 4 | oliphant | alicia | F | 26 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 140 |
| 11 | oliphant | caroline | F | 31 | Episcopal Methodist | German | Ontario | No Occupation Listed | 150 |
| 1 | oliphant | catherine | F | 58 | Episcopal Methodist | Irish | Ireland | No Occupation Listed | 139 |
| 16 | oliphant | cecil | M | 0 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 150 |
| 10 | oliphant | charles | M | 18 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 154 |
| 21 | oliphant | christina | F | 34 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 173 |
| 2 | oliphant | edward | M | 22 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 139 |
| 15 | oliphant | ethbert | M | 3 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 150 |
| 9 | oliphant | henry | M | 21 | Episcopal Methodist | Dutch | Ontario | Farmers, general and nfs | 154 |
| 25 | oliphant | isaac | M | 57 | Episcopal Methodist | Dutch | Ontario | Farmers, general and nfs | 139 |
| 5 | oliphant | james | M | 60 | Episcopal Methodist | English | Ontario | Farmers, general and nfs | 179 |
| 11 | oliphant | jane | F | 24 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 154 |
| 14 | oliphant | laurena | F | 4 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 150 |
| 7 | oliphant | liza | F | 56 | Episcopal Methodist | Irish | Ireland | No Occupation Listed | 154 |
| 9 | oliphant | mary | F | 64 | Methodist | English | United States | No Occupation Listed | 130 |
| 6 | oliphant | philip | M | 63 | Episcopal Methodist | Dutch | Ontario | Farmers, general and nfs | 154 |
| 20 | oliphant | rebecca | F | 69 | Episcopal Methodist | Scottish | United States | No Occupation Listed | 173 |
| 12 | oliphant | rolph | M | 9 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 150 |
| 6 | oliphant | sarah | F | 68 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 179 |
| 8 | oliphant | thomas | M | 22 | Episcopal Methodist | Dutch | Ontario | Farmers, general and nfs | 154 |
| 22 | oliphant | wilbert | M | 18 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 173 |
| 17 | oliver | ada | F | 8 | Presbyterian | Irish | Ontario | No Occupation Listed | 53 |
| 15 | oliver | bertha | F | 11 | Presbyterian | Irish | Ontario | No Occupation Listed | 53 |
| 25 | oliver | boyd | M | 21 | Presbyterian | Scottish | Scotland | river drivers | 54 |
| 20 | oliver | ethel | F | 2 | Presbyterian | Irish | Ontario | No Occupation Listed | 53 |
| 24 | oliver | florence | F | 3 | Presbyterian | Irish | Ontario | No Occupation Listed | 54 |
| 22 | oliver | hariet | F | 24 | Presbyterian | Irish | Ontario | No Occupation Listed | 54 |
| 16 | oliver | henry | M | 9 | Presbyterian | Irish | Ontario | No Occupation Listed | 53 |
| 13 | oliver | josiah | M | 40 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 53 |
| 19 | oliver | maggie | F | 4 | Presbyterian | Irish | Ontario | No Occupation Listed | 53 |
| 14 | oliver | maryann | F | 32 | Presbyterian | English | Ontario | No Occupation Listed | 53 |
| 18 | oliver | norman | M | 6 | Presbyterian | Irish | Ontario | No Occupation Listed | 53 |
| 21 | oliver | wm | M | 31 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 54 |
| 23 | oliver | wm | M | 5 | Presbyterian | Irish | Ontario | No Occupation Listed | 54 |
| 19 | oneil | anne | F | 70 | Roman Catholic | Irish | Ireland | No Occupation Listed | 48 |
| 15 | oneil | annie | F | 14 | Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 3 | oneil | annie | F | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 20 | oneil | bridget | F | 26 | Roman Catholic | Irish | Quebec | No Occupation Listed | 48 |
| 21 | oneil | elizabeth | F | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 2 | oneil | ellen | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 16 | oneil | emma | F | 9 | Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 4 | oneil | esther | F | 83 | Roman Catholic | Irish | Ireland | No Occupation Listed | 41 |
| 23 | oneil | james | M | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 18 | oneil | james | M | 77 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 48 |
| 14 | oneil | john | M | 43 | Methodist | Irish | Ireland | Farmers, general and nfs | 209 |
| 18 | oneil | john | M | 2 | Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 19 | oneil | john | M | 50 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 41 |
| 20 | oneil | julia | F | 38 | Roman Catholic | Irish | Ireland | No Occupation Listed | 41 |
| 1 | oneil | julia | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 24 | oneil | mary | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 22 | oneil | thomas | M | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 17 | oneil | william | M | 6 | Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 25 | oneil | william | M | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 9 | orr | andrew | M | 18 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 145 |
| 10 | orr | edwin | M | 16 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 145 |
| 8 | orr | isabella | F | 20 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 145 |
| 23 | orr | john | M | 28 | Presbyterian | Irish | Ontario | Blacksmiths | 35 |
| 6 | orr | joseph | M | 50 | Episcopal Methodist | Irish | Ontario | Farmers, general and nfs | 145 |
| 7 | orr | margareth | F | 43 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 145 |
| 24 | orr | rosanna | F | 23 | Presbyterian | English | Ontario | No Occupation Listed | 35 |
| 25 | orr | wm | M | 11 | Presbyterian | Irish | Ontario | No Occupation Listed | 35 |
| 5 | orth | abraham | M | 75 | Wesleyan Methodist | German | Ontario | Farmers, general and nfs | 83 |
| 9 | orth | alice | F | 27 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 83 |
| 7 | orth | george | M | 25 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 83 |
| 6 | orth | jane | F | 65 | Wesleyan Methodist | Irish | Ireland | No Occupation Listed | 83 |
| 8 | orth | susanna | F | 30 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 83 |
| 17 | osborne | charles | M | 37 | Anglican | English | Ontario | Farmers, general and nfs | 96 |
| 18 | osborne | jane | F | 34 | Anglican | Irish | Ireland | No Occupation Listed | 96 |
| 19 | osborne | mary | F | 11 | Anglican | English | Ontario | No Occupation Listed | 96 |
| 17 | oshaughnassy | alphonsus | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 12 | oshaughnassy | augustus | M | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 13 | oshaughnassy | charles | M | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 14 | oshaughnassy | earnest | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 15 | oshaughnassy | helena | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 16 | oshaughnassy | lillian | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 11 | oshaughnassy | mary | F | 33 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 10 | oshaughnassy | thomas | M | 41 | Roman Catholic | Irish | Ontario | Lumberers and loggers | 39 |
| 2 | oughtred | emeline | F | 26 | Methodist | English | Ontario | No Occupation Listed | 244 |
| 1 | oughtred | william | M | 30 | Methodist | English | Ontario | Farmers, general and nfs | 244 |
| 18 | owens | annie | F | 15 | Anglican | English | England | No Occupation Listed | 50 |
| 5 | owens | bridget | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 31 |
| 12 | owens | eddie | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 31 |
| 7 | owens | edward | M | 23 | Roman Catholic | Irish | Ontario | Labourers nfs | 7 |
| 8 | owens | jennie | F | 18 | Roman Catholic | Irish | Ontario | Milliners | 31 |
| 7 | owens | john | M | 20 | Roman Catholic | Irish | Ontario | Labourers nfs | 31 |
| 15 | owens | joseph | M | 31 | Methodist | Irish | Ontario | Dealer, merchant etc. (Wholesale & retail trade) | 259 |
| 8 | owens | mary | F | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 7 |
| 6 | owens | mary | F | 22 | Roman Catholic | Irish | Ontario | Tailors and tailoresses | 31 |
| 9 | owens | nellie | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 31 |
| 6 | owens | patrick | M | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 7 |
| 10 | owens | sarah | F | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 31 |
| 4 | owens | william | M | 45 | Roman Catholic | Irish | Ireland | Labourers nfs | 31 |
| 11 | owens | willie | M | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 31 |