Residents of Nelson — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 1 | odougherty | catharin | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 233 |
| 22 | odougherty | daniel | M | 35 | Roman Catholic | Irish | Ontario | Labourers nfs | 233 |
| 23 | odougherty | margret | F | 31 | Roman Catholic | Irish | Ontario | No Occupation Listed | 233 |
| 25 | odougherty | margret | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 233 |
| 24 | odougherty | mary | F | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 233 |
| 2 | odougherty | sarah | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 233 |
| 18 | ogg | alexander | M | 35 | Presbyterian | Scottish | Ontario | Farmers, general and nfs | 34 |
| 16 | ogg | anne | F | 28 | Roman Catholic | French | Ontario | No Occupation Listed | 322 |
| 19 | ogg | elect | F | 22 | Presbyterian | Canadian | Ontario | No Occupation Listed | 34 |
| 17 | ogg | henry | M | 22 | Roman Catholic | French | Ontario | No Occupation Listed | 322 |
| 15 | ogg | marie | F | 41 | Roman Catholic | French | Quebec | No Occupation Listed | 322 |
| 14 | ogg | nelson | M | 65 | Roman Catholic | French | Quebec | Farmers, general and nfs | 322 |
| 18 | oliphant | duncan | M | 32 | Presbyterian | Unknown | Ontario | Railway builders, workers and labourers | 218 |
| 20 | oliphant | maggie | F | 8 | Presbyterian | Scottish | Ontario | No Occupation Listed | 218 |
| 19 | oliphant | mary | F | 30 | Presbyterian | Scottish | Scotland | No Occupation Listed | 218 |
| 21 | oliphant | mary | F | 4 | Presbyterian | Scottish | Ontario | No Occupation Listed | 218 |
| 7 | omstead | ida | F | 20 | Methodist | Canadian | Ontario | No Occupation Listed | 296 |
| 6 | omstead | sarah | F | 15 | Methodist | Canadian | Ontario | No Occupation Listed | 296 |
| 2 | oneill | catherine | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 156 |
| 5 | oneill | catherine | F | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 156 |
| 3 | oneill | elizabeth | F | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 156 |
| 4 | oneill | john | M | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 156 |
| 1 | oneill | william | M | 54 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 156 |
| 14 | osborne | amanda | F | 8 | Methodist | English | Ontario | No Occupation Listed | 11 |
| 9 | osborne | charlotte | F | 34 | Methodist | English | England | No Occupation Listed | 11 |
| 8 | osborne | cornelius | M | 36 | Methodist | English | Nova Scotia | river drivers | 11 |
| 15 | osborne | elizabeth | F | 6 | Methodist | English | Ontario | No Occupation Listed | 11 |
| 12 | osborne | howard | M | 11 | Methodist | English | Ontario | No Occupation Listed | 11 |
| 16 | osborne | john | M | 4 | Methodist | English | Ontario | No Occupation Listed | 11 |
| 17 | osborne | maggie | F | 0 | Methodist | English | Ontario | No Occupation Listed | 11 |
| 13 | osborne | marcus | M | 9 | Methodist | English | Ontario | No Occupation Listed | 11 |
| 11 | osborne | sarah | F | 13 | Methodist | English | Ontario | No Occupation Listed | 11 |
| 10 | osborne | violette | F | 16 | Methodist | English | Ontario | No Occupation Listed | 11 |