Residents of Morris — Sub-district C, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 22 | oconnor | allace | F | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 185 |
| 17 | oconnor | bat | M | 42 | Roman Catholic | Irish | Ireland | No Occupation Listed | 185 |
| 23 | oconnor | bat | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 185 |
| 18 | oconnor | catherine | F | 36 | Roman Catholic | Irish | Ontario | No Occupation Listed | 185 |
| 21 | oconnor | david | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 185 |
| 20 | oconnor | john | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 185 |
| 24 | oconnor | martin | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 185 |
| 19 | oconnor | mary | F | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 185 |
| 11 | olivar | ann | F | 21 | Methodist | English | Ontario | No Occupation Listed | 223 |
| 12 | olivar | ella | F | 18 | Methodist | English | Ontario | No Occupation Listed | 223 |
| 13 | olivar | george | M | 12 | Methodist | English | Ontario | No Occupation Listed | 223 |
| 8 | olivar | manuel | M | 49 | Methodist | English | England | Farmers, general and nfs | 223 |
| 10 | olivar | mary | F | 23 | Methodist | English | Ontario | No Occupation Listed | 223 |
| 9 | olivar | sarah | F | 50 | Methodist | Scottish | Ontario | No Occupation Listed | 223 |
| 25 | oliver | ann | F | 52 | Wesleyan Methodist | English | England | No Occupation Listed | 51 |
| 23 | oliver | elizabeth | F | 22 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 51 |
| 1 | oliver | john | M | 29 | Wesleyan Methodist | English | Ontario | Farmers, general and nfs | 51 |
| 24 | oliver | lydia | F | 1 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 51 |
| 22 | oliver | thommas | M | 27 | Wesleyan Methodist | English | Ontario | Hotel Keepers and Managers | 51 |
| 2 | onghton | harry | M | 2 | Presbyterian | Irish | Ontario | No Occupation Listed | 50 |
| 23 | onghton | henery | M | 35 | Presbyterian | Irish | Ireland | No Occupation Listed | 50 |
| 25 | onghton | john | M | 8 | Presbyterian | Irish | Ontario | No Occupation Listed | 50 |
| 24 | onghton | margaret | F | 36 | Presbyterian | Irish | Ontario | No Occupation Listed | 50 |
| 1 | onghton | william | M | 6 | Presbyterian | Irish | Ontario | No Occupation Listed | 50 |
| 1 | oroark | johana | F | 28 | Roman Catholic | Irish | Ireland | No Occupation Listed | 114 |
| 24 | oroark | margaret | F | 78 | Roman Catholic | Irish | Ireland | No Occupation Listed | 114 |
| 2 | oroark | onnar | F | 80 | Roman Catholic | Irish | Ireland | No Occupation Listed | 114 |
| 23 | oroark | patrick | M | 75 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 114 |
| 25 | oroark | patrick | M | 30 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 114 |
| 1 | osborn | alfred | M | 30 | Methodist | English | Ontario | Labourers nfs | 109 |
| 6 | osborn | emmah | F | 1 | Methodist | English | Ontario | No Occupation Listed | 109 |
| 2 | osborn | margret | F | 25 | Methodist | Irish | Ontario | No Occupation Listed | 109 |
| 3 | osborn | mariah | F | 7 | Methodist | English | Ontario | No Occupation Listed | 109 |
| 5 | osborn | mary | F | 3 | Methodist | English | Ontario | No Occupation Listed | 109 |
| 4 | osborn | ninah | F | 3 | Methodist | English | Ontario | No Occupation Listed | 109 |
| 11 | osborne | agness | F | 26 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 96 |
| 9 | osborne | alace | F | 5 | Methodist | English | Ontario | No Occupation Listed | 91 |
| 10 | osborne | ammie | F | 3 | Methodist | English | Ontario | No Occupation Listed | 91 |
| 8 | osborne | charles | M | 5 | Methodist | English | Ontario | No Occupation Listed | 91 |
| 7 | osborne | david | M | 8 | Methodist | English | Ontario | No Occupation Listed | 91 |
| 10 | osborne | james | M | 33 | Wesleyan Methodist | English | Ontario | Labourers nfs | 96 |
| 6 | osborne | jane | F | 10 | Methodist | English | Ontario | No Occupation Listed | 91 |
| 11 | osborne | margret | F | 0 | Methodist | English | Ontario | No Occupation Listed | 91 |
| 13 | osborne | martha | F | 2 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 96 |
| 5 | osborne | mary | F | 26 | Methodist | Irish | Ontario | No Occupation Listed | 91 |
| 12 | osborne | mary | F | 6 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 96 |
| 4 | osborne | thomas | M | 29 | Methodist | English | Ontario | Labourers nfs | 91 |