Residents of Whitchurch — Sub-district C, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 16 | oldham | ann | F | 0 | Primitive Methodist | English | Ontario | No Occupation Listed | 14 |
| 15 | oldham | mabeth | F | 22 | Primitive Methodist | English | Ontario | No Occupation Listed | 14 |
| 14 | oldham | tom | M | 31 | Primitive Methodist | English | England | Farmers, general and nfs | 14 |
| 9 | oliver | ada | F | 6 | Methodist | English | Ontario | No Occupation Listed | 78 |
| 6 | oliver | george | M | 13 | Methodist | English | Ontario | No Occupation Listed | 78 |
| 5 | oliver | grace | F | 35 | Methodist | English | Ontario | No Occupation Listed | 78 |
| 8 | oliver | james | M | 8 | Methodist | English | Ontario | No Occupation Listed | 78 |
| 4 | oliver | joshua | M | 37 | Methodist | English | Ontario | Farmers, general and nfs | 78 |
| 18 | oliver | sarah | F | 49 | Anglican | French | Ontario | No Occupation Listed | 82 |
| 7 | oliver | sophia | F | 11 | Methodist | English | Ontario | No Occupation Listed | 78 |
| 10 | oliver | willie | M | 2 | Methodist | English | Ontario | No Occupation Listed | 78 |
| 22 | ormis | henry | M | 2 | Quaker/Society of Friends | English | Ontario | No Occupation Listed | 10 |
| 1 | orr | caroline | F | 16 | Anglican | Irish | Ontario | No Occupation Listed | 122 |
| 24 | orr | john | M | 22 | Anglican | Irish | Ontario | Farmers, general and nfs | 122 |
| 25 | orr | joseph | M | 19 | Anglican | Irish | Ontario | Farmers, general and nfs | 122 |
| 23 | orr | maria | F | 24 | Anglican | Irish | Ontario | No Occupation Listed | 122 |
| 21 | orr | mary | F | 58 | Anglican | Irish | Ireland | No Occupation Listed | 122 |
| 20 | orr | william | M | 60 | Anglican | Irish | Ireland | Farmers, general and nfs | 122 |
| 22 | orr | william | M | 26 | Anglican | Irish | Ontario | lawyer | 122 |
| 20 | osburn | john | M | 21 | Presbyterian | English | Ontario | Labourers nfs | 73 |
| 4 | oslley | ann | F | 45 | Anglican | English | Ontario | No Occupation Listed | 23 |
| 8 | oslley | edward | M | 10 | Anglican | English | Ontario | No Occupation Listed | 23 |
| 7 | oslley | henry | M | 14 | Anglican | English | Ontario | No Occupation Listed | 23 |
| 5 | oslley | john | M | 17 | Anglican | English | Ontario | No Occupation Listed | 23 |
| 9 | oslley | mary | F | 2 | Anglican | English | Ontario | No Occupation Listed | 23 |
| 6 | oslley | millia | F | 15 | Anglican | English | Ontario | No Occupation Listed | 23 |
| 3 | oslley | william | M | 45 | Anglican | English | England | Farmers, general and nfs | 23 |
| 20 | oxendale | john | M | 47 | Dunker/Tunker/Dunkard | English | England | Farmers, general and nfs | 82 |
| 22 | oxendale | louisa | F | 17 | Dunker/Tunker/Dunkard | English | Ontario | No Occupation Listed | 82 |
| 21 | oxendale | sarah | F | 49 | Dunker/Tunker/Dunkard | German | Ontario | No Occupation Listed | 82 |