Residents of Watt, Cardwell — Sub-district F, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 6 | oldham | charles | M | 24 | Methodist | English | Ontario | No Occupation Listed | 175 |
| 7 | oldham | mary | F | 21 | Methodist | English | Ontario | No Occupation Listed | 175 |
| 8 | oldham | neamiah | M | 3 | Methodist | English | Ontario | No Occupation Listed | 175 |
| 5 | oldham | william | M | 21 | Methodist | English | Ontario | Farmers, general and nfs | 175 |
| 9 | oldham | | M | 1 | Presbyterian | Irish | Ontario | No Occupation Listed | 175 |
| 19 | olsen | gunild | F | 55 | Lutheran | Norwegian | Norway | No Occupation Listed | 192 |
| 20 | olsen | olle | M | 21 | Lutheran | Norwegian | Norway | No Occupation Listed | 192 |
| 18 | olsen | rasmus | M | 54 | Lutheran | Norwegian | Norway | Farmers, general and nfs | 192 |
| 21 | olsen | tobias | M | 19 | Lutheran | Norwegian | Quebec | No Occupation Listed | 192 |
| 10 | outhward | sarah | F | 30 | Presbyterian | English | Ontario | No Occupation Listed | 102 |