Residents of Ste. Monique — Sub-district H, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 4 | osullivan | caroline | F | 37 | Roman Catholic | Irish | Quebec | No Occupation Listed | 296 |
| 24 | osullivan | daniel | M | 29 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 295 |
| 12 | osullivan | daniel | M | 4 | Roman Catholic | Irish | Quebec | No Occupation Listed | 296 |
| 7 | osullivan | edouard | M | 12 | Roman Catholic | Irish | Quebec | No Occupation Listed | 296 |
| 10 | osullivan | helen | F | 7 | Roman Catholic | Irish | Quebec | No Occupation Listed | 296 |
| 13 | osullivan | james | M | 1 | Roman Catholic | Irish | Quebec | No Occupation Listed | 296 |
| 5 | osullivan | johnny | M | 15 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 296 |
| 2 | osullivan | margurite | F | 19 | Roman Catholic | Irish | Quebec | No Occupation Listed | 295 |
| 23 | osullivan | mary | F | 57 | Roman Catholic | Irish | Ireland | No Occupation Listed | 295 |
| 9 | osullivan | mary | F | 9 | Roman Catholic | Irish | Quebec | No Occupation Listed | 296 |
| 6 | osullivan | michael | M | 14 | Roman Catholic | Irish | Quebec | No Occupation Listed | 296 |
| 8 | osullivan | patrick | M | 11 | Roman Catholic | Irish | Quebec | No Occupation Listed | 296 |
| 1 | osullivan | pattrick | M | 15 | Roman Catholic | Irish | Quebec | No Occupation Listed | 295 |
| 3 | osullivan | peter | M | 47 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 296 |
| 11 | osullivan | peter | M | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 296 |
| 22 | osullivan | thimothy | M | 62 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 295 |
| 25 | osullivan | thimothy | M | 25 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 295 |