Residents of McNab — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 10 | oconner | charles | M | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 11 |
| 9 | oconner | dennis | M | 26 | Roman Catholic | Irish | Ontario | No Occupation Listed | 11 |
| 13 | oconner | james | M | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 11 |
| 10 | oconner | james | M | 46 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 224 |
| 13 | oconner | james | M | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 224 |
| 11 | oconner | john | M | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 11 |
| 6 | oconner | john | M | 53 | Roman Catholic | Irish | Ireland | Carpenters | 295 |
| 12 | oconner | margaret | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 11 |
| 11 | oconner | margaret | F | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 224 |
| 15 | oconner | margaret | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 224 |
| 12 | oconner | martha | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 224 |
| 14 | oconner | mary | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 224 |
| 8 | oconner | sarah | F | 50 | Roman Catholic | Irish | Ontario | No Occupation Listed | 11 |
| 14 | oconner | sarah | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 11 |
| 7 | oconner | william | M | 56 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 11 |
| 15 | oconner | william | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 11 |
| 5 | oconnor | annie | F | 23 | Roman Catholic | French | Ontario | No Occupation Listed | 138 |
| 3 | oconnor | bridget | F | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 138 |
| 9 | oconnor | caroline | F | 23 | Roman Catholic | Irish | Ontario | No Occupation Listed | 138 |
| 19 | oconnor | cathrine | F | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 312 |
| 7 | oconnor | charles | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 138 |
| 13 | oconnor | james | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 311 |
| 22 | oconnor | james | M | 78 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 313 |
| 21 | oconnor | john | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 312 |
| 11 | oconnor | joseph | M | 37 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 311 |
| 18 | oconnor | martha | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 312 |
| 23 | oconnor | martha | F | 70 | Roman Catholic | Irish | Ireland | No Occupation Listed | 313 |
| 12 | oconnor | mary | F | 26 | Roman Catholic | Irish | Quebec | No Occupation Listed | 311 |
| 15 | oconnor | mary | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 311 |
| 17 | oconnor | mary | F | 45 | Roman Catholic | Irish | Ontario | No Occupation Listed | 312 |
| 20 | oconnor | mary | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 312 |
| 14 | oconnor | michael | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 311 |
| 24 | oconnor | sarah | F | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 313 |
| 2 | oconnor | stephen | M | 60 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 138 |
| 6 | oconnor | stephen | M | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 138 |
| 8 | oconnor | stephen | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 138 |
| 16 | oconnor | stephen | M | 50 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 312 |
| 4 | oconnor | timothy | M | 30 | Roman Catholic | Irish | Ireland | No Occupation Listed | 138 |
| 25 | odonnel | bridget | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 140 |
| 16 | odonnel | cathrine | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 140 |
| 19 | odonnel | cathrine | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 140 |
| 3 | odonnel | cathrine | F | 21 | Roman Catholic | Irish | Ontario | No Occupation Listed | 246 |
| 7 | odonnel | cornelious | M | 17 | Roman Catholic | Irish | Ontario | Labourers nfs | 246 |
| 22 | odonnel | cornelius | M | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 140 |
| 23 | odonnel | david | M | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 140 |
| 5 | odonnel | david | M | 15 | Roman Catholic | Irish | Ontario | Labourers nfs | 246 |
| 24 | odonnel | james | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 140 |
| 15 | odonnel | john | M | 50 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 140 |
| 17 | odonnel | john | M | 26 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 140 |
| 6 | odonnel | john | M | 25 | Roman Catholic | Irish | Quebec | Labourers nfs | 246 |
| 20 | odonnel | patrick | M | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 140 |
| 4 | odonnel | patrick | M | 19 | Roman Catholic | Irish | Ontario | Labourers nfs | 246 |
| 21 | odonnel | thomas | M | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 140 |
| 18 | odonnel | william | M | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 140 |
| 11 | ogredy | ellen | F | 31 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 13 | ogredy | john | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 12 | ogredy | mary | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 10 | ogredy | thomas | M | 44 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 22 |
| 11 | ohara | john | M | 40 | Roman Catholic | Irish | Ontario | Labourers nfs | 297 |
| 13 | ohara | mary | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 297 |
| 12 | ohara | sarah | F | 42 | Roman Catholic | Irish | Ontario | No Occupation Listed | 297 |
| 24 | oleary | annie | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 54 |
| 22 | oleary | daniel | M | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 54 |
| 16 | oleary | esther | F | 44 | Roman Catholic | Irish | Ireland | No Occupation Listed | 54 |
| 23 | oleary | hester | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 54 |
| 19 | oleary | james | M | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 54 |
| 21 | oleary | john | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 54 |
| 18 | oleary | margaret | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 54 |
| 17 | oleary | mary | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 54 |
| 15 | oleary | patrick | M | 45 | Roman Catholic | Irish | Ireland | Labourers nfs | 54 |
| 20 | oleary | patrick | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 54 |
| 3 | ollerson | cathrine | F | 30 | Roman Catholic | Irish | Quebec | No Occupation Listed | 82 |
| 8 | ollerson | cathrine | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 82 |
| 2 | ollerson | james | M | 40 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 82 |
| 5 | ollerson | john | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 82 |
| 6 | ollerson | margaret | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 82 |
| 4 | ollerson | maru | F | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 82 |
| 7 | ollerson | william | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 82 |
| 11 | oniel | hugh | M | 30 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 147 |
| 12 | oniel | johannah | F | 25 | Roman Catholic | Irish | Ontario | No Occupation Listed | 147 |
| 22 | oram | abigail | F | 2 | Methodist | Scottish | Ontario | No Occupation Listed | 275 |
| 18 | oram | cathrine | F | 12 | Methodist | Scottish | Ontario | No Occupation Listed | 275 |
| 17 | oram | elizabeth | F | 14 | Methodist | Scottish | Ontario | No Occupation Listed | 275 |
| 21 | oram | ellen | F | 4 | Methodist | Scottish | Ontario | No Occupation Listed | 275 |
| 15 | oram | george | M | 41 | Methodist | Scottish | Ontario | Farmers, general and nfs | 275 |
| 20 | oram | george | M | 8 | Methodist | Scottish | Ontario | No Occupation Listed | 275 |
| 16 | oram | margaret | F | 41 | Methodist | Scottish | Scotland | No Occupation Listed | 275 |
| 19 | oram | margaret | F | 10 | Methodist | Scottish | Ontario | No Occupation Listed | 275 |
| 20 | orem | moria | F | 31 | Presbyterian | English | Quebec | No Occupation Listed | 177 |
| 19 | orem | neilson | M | 37 | Presbyterian | Scottish | Quebec | Labourers nfs | 177 |
| 11 | ottbur | cathrine | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 112 |
| 8 | ottbur | henry | M | 52 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 112 |
| 10 | ottbur | james | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 112 |
| 9 | ottbur | mary | F | 43 | Roman Catholic | Irish | Ireland | No Occupation Listed | 112 |
| 12 | ottbur | william | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 112 |
| 22 | owen | margaret | F | 51 | Anglican | English | England | No Occupation Listed | 232 |
| 21 | owen | thomas | M | 46 | Anglican | English | England | Carpenters | 232 |