Residents of Manvers — Sub-district D, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 11 | oakes | ann | F | 36 | Anglican | Irish | Ontario | No Occupation Listed | 270 |
| 16 | oakes | frederick | M | 3 | Anglican | English | Ontario | No Occupation Listed | 270 |
| 12 | oakes | george | M | 22 | Anglican | English | Ontario | river drivers | 270 |
| 17 | oakes | isabella | F | 17 | Anglican | English | Ontario | Servants nfs | 270 |
| 14 | oakes | james | M | 14 | Anglican | English | Ontario | river drivers | 270 |
| 15 | oakes | samuel | M | 12 | Anglican | English | Ontario | No Occupation Listed | 270 |
| 10 | oakes | thomas | M | 68 | Anglican | English | Ireland | Others in building construction | 270 |
| 13 | oakes | thomas | M | 18 | Anglican | English | Ontario | river drivers | 270 |
| 11 | obrien | elizabeth | F | 44 | Presbyterian | Irish | Ontario | No Occupation Listed | 288 |
| 10 | obrien | thomas | M | 46 | Presbyterian | Irish | Ontario | Merchants, specified large-scale wholesaleing | 288 |
| 12 | oliver | martha | F | 81 | Anglican | Irish | Ireland | No Occupation Listed | 41 |
| 9 | oneil | catherine | F | 22 | Methodist | Irish | Ontario | No Occupation Listed | 102 |
| 12 | orom | david | M | 42 | Roman Catholic | Aboriginal peoples, n.s | United States | Trappers or Hunters | 100 |
| 14 | orom | david | M | 18 | Roman Catholic | Aboriginal peoples, n.s | Quebec | Trappers or Hunters | 100 |
| 20 | orom | ellen | F | 3 | Roman Catholic | Aboriginal peoples, n.s | Quebec | No Occupation Listed | 100 |
| 18 | orom | esau | M | 8 | Roman Catholic | Aboriginal peoples, n.s | Quebec | No Occupation Listed | 100 |
| 19 | orom | freman | M | 6 | Roman Catholic | Aboriginal peoples, n.s | Quebec | No Occupation Listed | 100 |
| 16 | orom | hardick | M | 10 | Roman Catholic | Aboriginal peoples, n.s | Quebec | No Occupation Listed | 100 |
| 17 | orom | mary | F | 10 | Roman Catholic | Aboriginal peoples, n.s | Quebec | No Occupation Listed | 100 |
| 15 | orom | rhoda | F | 19 | Roman Catholic | Aboriginal peoples, n.s | Quebec | No Occupation Listed | 100 |
| 13 | orom | sarah | F | 40 | Roman Catholic | Aboriginal peoples, n.s | Quebec | No Occupation Listed | 100 |