Residents of Sutton — Sub-district B, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 25 | obrien | amelia | F | 29 | Roman Catholic | Irish | Quebec | Teachers (unspecified) | 25 |
| 1 | obrien | amelia | F | 10 | Roman Catholic | Irish | United States | No Occupation Listed | 25 |
| 12 | obrien | archa | M | 4 | Anglican | Irish | Quebec | No Occupation Listed | 12 |
| 18 | obrien | bessie | F | 65 | Anglican | Irish | Ireland | No Occupation Listed | 84 |
| 9 | obrien | emma | F | 24 | Methodist | English | Quebec | No Occupation Listed | 89 |
| 14 | obrien | jessie | F | 0 | Anglican | Irish | Quebec | No Occupation Listed | 12 |
| 24 | obrien | katharine | F | 67 | Roman Catholic | Irish | Ireland | No Occupation Listed | 25 |
| 10 | obrien | leon | M | 4 | Methodist | Irish | Quebec | No Occupation Listed | 89 |
| 13 | obrien | lionel | M | 2 | Anglican | Irish | Quebec | No Occupation Listed | 12 |
| 11 | obrien | luella | F | 3 | Methodist | Irish | Quebec | No Occupation Listed | 89 |
| 11 | obrien | mary | F | 30 | Anglican | English | Quebec | No Occupation Listed | 12 |
| 12 | obrien | nora | F | 1 | Methodist | Irish | Quebec | No Occupation Listed | 89 |
| 23 | obrien | thomas | M | 65 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 25 |
| 17 | obrien | thomas | M | 65 | Anglican | Irish | Ireland | Farmers, general and nfs | 84 |
| 8 | obrien | thomas | M | 28 | Methodist | Irish | Quebec | Farmers, general and nfs | 89 |
| 10 | obrien | william | M | 28 | Anglican | Irish | Quebec | Blacksmiths | 12 |
| 13 | obrien | | F | 0 | Methodist | Irish | Quebec | No Occupation Listed | 89 |
| 24 | obrim | ernest | M | 2 | Anglican | Irish | Quebec | No Occupation Listed | 242 |
| 23 | obrim | hattie | F | 4 | Anglican | Irish | Quebec | No Occupation Listed | 242 |
| 18 | obrim | jenette | F | 28 | Anglican | Irish | Quebec | No Occupation Listed | 241 |
| 17 | obrim | john | M | 41 | Anglican | Irish | Quebec | Farmers, general and nfs | 241 |
| 22 | obrim | nellie | F | 6 | Anglican | Irish | Quebec | No Occupation Listed | 242 |
| 21 | obrim | rabecca | F | 28 | Anglican | Irish | Quebec | No Occupation Listed | 242 |
| 20 | obrim | thomas | M | 32 | Anglican | Irish | Quebec | Farmers, general and nfs | 242 |
| 22 | obrine | ann | F | 36 | Roman Catholic | Irish | Ireland | No Occupation Listed | 294 |
| 16 | obrine | bridgit | F | 45 | Roman Catholic | Irish | Ireland | No Occupation Listed | 190 |
| 17 | obrine | catherine | F | 25 | Roman Catholic | Irish | Quebec | No Occupation Listed | 190 |
| 1 | obrine | edward | M | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 294 |
| 5 | obrine | elezabeth | F | 26 | Roman Catholic | Irish | Quebec | No Occupation Listed | 308 |
| 19 | obrine | elizabeth | F | 19 | Roman Catholic | Irish | Quebec | No Occupation Listed | 190 |
| 22 | obrine | francis | M | 11 | Roman Catholic | Irish | Quebec | No Occupation Listed | 190 |
| 24 | obrine | francis | M | 9 | Roman Catholic | Irish | Quebec | No Occupation Listed | 294 |
| 23 | obrine | james | M | 32 | Methodist | Irish | United States | Farmers, general and nfs | 125 |
| 18 | obrine | john | M | 23 | Roman Catholic | Irish | Quebec | Labourers nfs | 190 |
| 23 | obrine | john | M | 11 | Roman Catholic | Irish | United States | No Occupation Listed | 294 |
| 6 | obrine | john | M | 24 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 308 |
| 20 | obrine | marcus | M | 17 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 190 |
| 21 | obrine | marcus | M | 38 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 294 |
| 4 | obrine | mary | F | 76 | Roman Catholic | Irish | Ireland | Female farmer | 308 |
| 24 | obrine | molissa | F | 24 | Methodist | Scottish | Quebec | No Occupation Listed | 125 |
| 15 | obrine | patrick | M | 56 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 190 |
| 25 | obrine | william | M | 2 | Methodist | Scottish | Quebec | No Occupation Listed | 125 |
| 21 | obrine | william | M | 15 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 190 |
| 25 | obrine | william | M | 7 | Roman Catholic | Irish | Quebec | No Occupation Listed | 294 |
| 22 | ohaloran | john | M | 72 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 30 |
| 25 | oliver | alice | F | 20 | Adventist Family | English | Quebec | No Occupation Listed | 153 |
| 23 | oliver | benjamin | M | 48 | Adventist Family | English | Quebec | No Occupation Listed | 153 |
| 17 | oliver | benjamin | M | 1 | Methodist | German | United States | No Occupation Listed | 393 |
| 24 | oliver | cordelia | F | 45 | Adventist Family | English | Quebec | No Occupation Listed | 153 |
| 3 | oliver | eliza | F | 14 | Adventist Family | English | Quebec | No Occupation Listed | 153 |
| 2 | oliver | jane | F | 16 | Adventist Family | English | Quebec | No Occupation Listed | 153 |
| 14 | oliver | john | M | 41 | Methodist | German | Quebec | Labourers nfs | 393 |
| 4 | oliver | juan | M | 10 | Adventist Family | English | Quebec | No Occupation Listed | 153 |
| 1 | oliver | louella | F | 18 | Adventist Family | English | Quebec | No Occupation Listed | 153 |
| 15 | oliver | mary | F | 31 | Methodist | English | United States | No Occupation Listed | 393 |
| 16 | oliver | nelson | M | 15 | Methodist | German | United States | Labourers nfs | 393 |
| 9 | olmstead | alden | M | 58 | Adventist Family | English | Quebec | Farmers, general and nfs | 76 |
| 11 | olmstead | fred | M | 19 | Adventist Family | English | Quebec | Clerk, nfs | 76 |
| 10 | olmstead | harriet | F | 58 | Adventist Family | English | United States | No Occupation Listed | 76 |
| 2 | olmstead | herbert | M | 21 | Adventist Family | English | Quebec | Carpenters | 108 |
| 25 | olmstead | orrin | M | 55 | Adventist Family | English | Quebec | Carpenters | 108 |
| 1 | olmstead | sarah | F | 58 | Adventist Family | English | Quebec | No Occupation Listed | 108 |
| 7 | orchet | john | M | 14 | Roman Catholic | Irish | Quebec | No Occupation Listed | 308 |
| 10 | oregan | dorothy | F | 49 | Anglican | English | United States | Dressmakers | 350 |
| 6 | oregan | emily | F | 36 | Anglican | English | Quebec | No Occupation Listed | 441 |
| 9 | oregan | gertrude | F | 6 | Anglican | Irish | Quebec | No Occupation Listed | 441 |
| 8 | oregan | kathline | F | 8 | Anglican | Irish | Quebec | No Occupation Listed | 441 |
| 7 | oregan | minnie | F | 18 | Anglican | Irish | Quebec | No Occupation Listed | 441 |
| 5 | oregan | william | M | 37 | Anglican | Irish | United States | Toll collectors | 441 |
| 25 | orourke | george | M | 1 | Roman Catholic | Irish | Quebec | No Occupation Listed | 179 |
| 24 | orourke | john | M | 3 | Roman Catholic | Irish | Quebec | No Occupation Listed | 179 |
| 22 | orourke | michael | M | 27 | Roman Catholic | Irish | United States | Foremen and supervisors, railways | 179 |
| 23 | orourke | nora | F | 21 | Roman Catholic | English | Quebec | No Occupation Listed | 179 |