Residents of Morris W-O — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 3 | obrien | berty | M | 5 | Presbyterian | Irish | Ontario | No Occupation Listed | 216 |
| 1 | obrien | george | M | 39 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 143 |
| 1 | obrien | george | M | 10 | Presbyterian | Irish | Ontario | No Occupation Listed | 216 |
| 21 | obrien | henry | M | 21 | Presbyterian | Scottish | Ontario | Farmers, general and nfs | 216 |
| 19 | obrien | ida | F | 11 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 143 |
| 2 | obrien | ida | F | 7 | Presbyterian | Irish | Ontario | No Occupation Listed | 216 |
| 2 | obrien | james | M | 31 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 143 |
| 22 | obrien | james | M | 18 | Presbyterian | Scottish | Ontario | No Occupation Listed | 216 |
| 19 | obrien | jhon | M | 48 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 216 |
| 23 | obrien | marguerit | F | 16 | Presbyterian | Scottish | Ontario | No Occupation Listed | 216 |
| 20 | obrien | marguret | F | 44 | Presbyterian | Scottish | Ontario | No Occupation Listed | 216 |
| 25 | obrien | minnie | F | 12 | Presbyterian | Scottish | Ontario | No Occupation Listed | 216 |
| 20 | obrien | nelson | M | 23 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 143 |
| 21 | obrien | phebe | F | 19 | Presbyterian | Irish | Ontario | No Occupation Listed | 143 |
| 18 | obrien | rebecca | F | 14 | Presbyterian | Irish | Ontario | No Occupation Listed | 143 |
| 14 | obrien | robert | M | 54 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 143 |
| 17 | obrien | robert | M | 17 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 143 |
| 15 | obrien | rosemond | F | 54 | Presbyterian | Irish | Ontario | No Occupation Listed | 143 |
| 24 | obrien | thomas | M | 14 | Presbyterian | Scottish | Ontario | No Occupation Listed | 216 |
| 16 | obrien | william | M | 19 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 143 |
| 11 | ohare | george | M | 48 | Roman Catholic | Irish | Quebec | Cooks | 354 |
| 19 | orton | alvan | M | 3 | Methodist | Irish | Ontario | No Occupation Listed | 269 |
| 14 | orton | ce | M | 46 | Methodist | English | Ontario | Saddler and harness maker | 269 |
| 18 | orton | ellen | F | 7 | Methodist | Irish | Ontario | No Occupation Listed | 269 |
| 16 | orton | ida | F | 13 | Methodist | Irish | Ontario | No Occupation Listed | 269 |
| 15 | orton | marguerit | F | 35 | Methodist | Irish | Ontario | No Occupation Listed | 269 |
| 17 | orton | morris | M | 11 | Methodist | Irish | Ontario | No Occupation Listed | 269 |
| 14 | ouimet | alfred | M | 28 | Roman Catholic | French | Quebec | Farmers, general and nfs | 126 |
| 15 | ouimet | bridgite | F | 27 | Roman Catholic | French | Quebec | No Occupation Listed | 126 |
| 16 | ouimet | catherine | F | 0 | Roman Catholic | French | Manitoba | No Occupation Listed | 126 |