Residents of Bristol — Sub-district D, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 23 | oboyle | austin | M | 15 | Roman Catholic | Irish | Quebec | river drivers | 169 |
| 7 | obren | david | M | 15 | Roman Catholic | Irish | Quebec | No Occupation Listed | 203 |
| 8 | obren | ellen | F | 55 | Roman Catholic | Irish | Ireland | No Occupation Listed | 203 |
| 5 | obren | mary | F | 22 | Roman Catholic | Irish | Quebec | No Occupation Listed | 203 |
| 4 | obren | michael | M | 24 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 203 |
| 6 | obren | patrick | M | 18 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 203 |
| 1 | obrien | annie | F | 28 | Roman Catholic | Irish | Quebec | No Occupation Listed | 202 |
| 3 | obrien | dennis | M | 1 | Roman Catholic | Irish | Quebec | No Occupation Listed | 202 |
| 2 | obrien | ellen | F | 2 | Roman Catholic | Irish | Quebec | No Occupation Listed | 202 |
| 25 | obrien | john | M | 31 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 202 |
| 2 | odber | henry | M | 16 | Roman Catholic | Irish | Quebec | river drivers | 153 |
| 12 | odonnel | catherine | F | 24 | Roman Catholic | Irish | Quebec | No Occupation Listed | 214 |
| 11 | odonnell | ann | F | 26 | Roman Catholic | Irish | Quebec | No Occupation Listed | 214 |
| 10 | odonnell | arthur | M | 30 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 214 |
| 7 | odonnell | bridget | F | 65 | Roman Catholic | Irish | Ireland | No Occupation Listed | 214 |
| 3 | odonnell | catherine | F | 22 | Roman Catholic | Irish | Quebec | No Occupation Listed | 206 |
| 1 | odonnell | ellen | F | 43 | Roman Catholic | Irish | Ireland | No Occupation Listed | 206 |
| 8 | odonnell | hugh | M | 10 | Roman Catholic | Irish | Quebec | No Occupation Listed | 206 |
| 4 | odonnell | james | M | 20 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 206 |
| 2 | odonnell | john | M | 25 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 206 |
| 6 | odonnell | john | M | 77 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 214 |
| 9 | odonnell | margaret | F | 32 | Roman Catholic | Irish | Quebec | No Occupation Listed | 214 |
| 6 | odonnell | mary | F | 15 | Roman Catholic | Irish | Quebec | No Occupation Listed | 206 |
| 8 | odonnell | mary | F | 35 | Roman Catholic | Irish | Quebec | No Occupation Listed | 214 |
| 25 | odonnell | neil | M | 44 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 206 |
| 5 | odonnell | neil | M | 18 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 206 |
| 9 | odonnell | tessie | F | 7 | Roman Catholic | Irish | Quebec | No Occupation Listed | 206 |
| 7 | odonnell | william | M | 12 | Roman Catholic | Irish | Quebec | No Occupation Listed | 206 |
| 2 | oflaherty | hanora | F | 25 | Roman Catholic | Irish | Quebec | No Occupation Listed | 231 |
| 6 | oflaherty | margaret | F | 55 | Roman Catholic | Irish | Ireland | No Occupation Listed | 231 |
| 3 | oflaherty | mary | F | 4 | Roman Catholic | Irish | Quebec | No Occupation Listed | 231 |
| 5 | oflaherty | michael | M | 2 | Roman Catholic | Irish | Quebec | No Occupation Listed | 231 |
| 1 | oflaherty | patrick | M | 32 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 231 |
| 4 | oflaherty | thomas | M | 3 | Roman Catholic | Irish | Quebec | No Occupation Listed | 231 |
| 7 | oflaherty | thomas | M | 67 | Roman Catholic | Irish | Ireland | No Occupation Listed | 231 |
| 6 | ohara | richard | M | 75 | Roman Catholic | Irish | Ireland | No Occupation Listed | 195 |
| 11 | olmstead | ann | F | 39 | Methodist | Irish | Ontario | No Occupation Listed | 310 |
| 13 | olmstead | charlotte | F | 12 | Methodist | English | Quebec | No Occupation Listed | 310 |
| 14 | olmstead | henry | M | 8 | Methodist | English | Quebec | No Occupation Listed | 310 |
| 15 | olmstead | mary | F | 4 | Methodist | English | Quebec | No Occupation Listed | 310 |
| 12 | olmstead | sarah | F | 17 | Methodist | English | Quebec | No Occupation Listed | 310 |
| 10 | olmstead | william | M | 45 | Methodist | English | Quebec | Farmers, general and nfs | 310 |
| 16 | olmstead | william | M | 1 | Methodist | English | Quebec | No Occupation Listed | 310 |
| 16 | omalia | mary | F | 28 | Roman Catholic | Irish | Quebec | No Occupation Listed | 246 |
| 17 | omalia | mary | F | 4 | Roman Catholic | Irish | Quebec | No Occupation Listed | 246 |
| 15 | omalia | patrick | M | 30 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 246 |
| 17 | orr | alexander | M | 12 | Anglican | Scottish | Quebec | No Occupation Listed | 289 |
| 21 | orr | alexander | M | 27 | Methodist | Scottish | Quebec | Farmers, general and nfs | 290 |
| 24 | orr | ann | F | 38 | Methodist | Scottish | Ontario | No Occupation Listed | 166 |
| 19 | orr | david | M | 6 | Anglican | Scottish | Quebec | No Occupation Listed | 289 |
| 14 | orr | eliza | F | 40 | Anglican | Irish | Ireland | No Occupation Listed | 289 |
| 20 | orr | elizabeth | F | 1 | Anglican | Scottish | Quebec | No Occupation Listed | 289 |
| 23 | orr | feba | F | 17 | Methodist | Scottish | Quebec | No Occupation Listed | 290 |
| 13 | orr | james | M | 49 | Anglican | Scottish | Quebec | Farmers, general and nfs | 289 |
| 22 | orr | john | M | 40 | Methodist | Scottish | Quebec | Farmers, general and nfs | 290 |
| 25 | orr | mary | F | 11 | Methodist | Scottish | Quebec | No Occupation Listed | 166 |
| 15 | orr | mary | F | 18 | Anglican | Scottish | Quebec | No Occupation Listed | 289 |
| 24 | orr | sarah | F | 70 | Methodist | Irish | Quebec | Ambiguous responses | 290 |
| 23 | orr | thomas | M | 36 | Methodist | Scottish | Quebec | Farmers, general and nfs | 166 |
| 2 | orr | thomas | M | 5 | Methodist | Scottish | Quebec | No Occupation Listed | 166 |
| 16 | orr | thomas | M | 14 | Anglican | Scottish | Quebec | Farmers, general and nfs | 289 |
| 1 | orr | william | M | 8 | Methodist | Scottish | Quebec | No Occupation Listed | 166 |
| 18 | orr | william | M | 10 | Anglican | Scottish | Quebec | No Occupation Listed | 289 |