Residents of Medonte — Sub-district L, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 7 | obrian | agnes | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 145 |
| 8 | obrian | alice | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 145 |
| 10 | obrian | david | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 145 |
| 4 | obrian | john | M | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 145 |
| 6 | obrian | lizzie | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 145 |
| 3 | obrian | mary | F | 35 | Roman Catholic | Irish | Ontario | No Occupation Listed | 145 |
| 5 | obrian | mary | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 145 |
| 2 | obrian | michael | M | 45 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 145 |
| 11 | obrian | tassie | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 145 |
| 9 | obrian | thate | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 145 |
| 21 | oconner | bridget | F | 23 | Roman Catholic | Irish | Ontario | No Occupation Listed | 126 |
| 7 | oconner | ellen | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 6 | oconner | joseph | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 20 | oconner | margret | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 126 |
| 8 | oconner | mary | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 19 | oconner | mary | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 126 |
| 18 | oconner | peter | M | 34 | Roman Catholic | Irish | United States | Farmers, general and nfs | 126 |
| 10 | oconnor | annie | F | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 133 |
| 7 | oconnor | bridget | F | 30 | Roman Catholic | Irish | Ontario | No Occupation Listed | 133 |
| 20 | oconnor | cathrine | F | 52 | Roman Catholic | Irish | Ireland | No Occupation Listed | 131 |
| 1 | oconnor | cathrine | F | 32 | Roman Catholic | Irish | Ontario | No Occupation Listed | 137 |
| 5 | oconnor | cathrine | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 137 |
| 11 | oconnor | corneluis | M | 15 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 297 |
| 22 | oconnor | daniel | M | 27 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 131 |
| 14 | oconnor | daniel | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 15 | oconnor | elisabeth | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 297 |
| 17 | oconnor | hannah | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 9 | oconnor | henora | F | 35 | Roman Catholic | Irish | Ontario | No Occupation Listed | 297 |
| 13 | oconnor | henora | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 297 |
| 12 | oconnor | jeremiah | M | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 25 | oconnor | john | M | 32 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 137 |
| 2 | oconnor | john | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 137 |
| 16 | oconnor | lissie | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 20 | oconnor | margaret | F | 70 | Roman Catholic | Irish | Ireland | No Occupation Listed | 6 |
| 6 | oconnor | mary | F | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 133 |
| 9 | oconnor | mary | F | 26 | Roman Catholic | Irish | Ontario | No Occupation Listed | 133 |
| 4 | oconnor | mary | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 137 |
| 13 | oconnor | mary | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 24 | oconnor | may | F | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 131 |
| 15 | oconnor | michael | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 14 | oconnor | moriah | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 297 |
| 11 | oconnor | norah | F | 40 | Roman Catholic | Irish | Ireland | No Occupation Listed | 158 |
| 8 | oconnor | patrick | M | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 133 |
| 8 | oconnor | patrick | M | 37 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 297 |
| 12 | oconnor | patrick | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 297 |
| 19 | oconnor | peter | M | 64 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 131 |
| 21 | oconnor | peter | M | 30 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 131 |
| 3 | oconnor | peter | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 137 |
| 23 | oconnor | william | M | 21 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 131 |
| 10 | oconnor | william | M | 16 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 297 |
| 20 | odonnell | cathrine | F | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 58 |
| 21 | odonnell | daniel | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 58 |
| 17 | odonnell | david | M | 34 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 58 |
| 19 | odonnell | john | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 58 |
| 18 | odonnell | margret | F | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 58 |
| 3 | oharah | clametine | F | 83 | Roman Catholic | Irish | Ireland | No Occupation Listed | 56 |
| 10 | oneil | maud | F | 0 | Presbyterian | Scottish | Ontario | No Occupation Listed | 232 |
| 9 | oneil | patrick | M | 37 | Roman Catholic | Irish | Ontario | Labourers nfs | 232 |
| 18 | ormsbey | mary | F | 4 | Anglican | English | Ontario | No Occupation Listed | 247 |
| 16 | ormsbey | muriah | F | 8 | Anglican | English | Ontario | No Occupation Listed | 247 |
| 17 | ormsbey | william | M | 6 | Anglican | English | Ontario | No Occupation Listed | 247 |
| 6 | orr | annie | F | 0 | Presbyterian | Irish | Ontario | No Occupation Listed | 230 |
| 3 | orr | cathrine | F | 18 | Presbyterian | Irish | Ontario | No Occupation Listed | 229 |
| 2 | orr | francis | M | 23 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 229 |
| 25 | orr | guy | M | 59 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 229 |
| 1 | orr | mary | F | 59 | Presbyterian | Irish | Ireland | No Occupation Listed | 229 |
| 5 | orr | mary | F | 23 | Presbyterian | Scottish | Ontario | No Occupation Listed | 230 |
| 4 | orr | william | M | 29 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 230 |
| 17 | orser | charles | M | 18 | Methodist | German | Ontario | No Occupation Listed | 28 |
| 16 | orser | clarrisa | F | 42 | Methodist | German | Ontario | No Occupation Listed | 28 |
| 15 | orser | isaac | M | 47 | Methodist | German | Ontario | Dealer, merchant etc. (Wholesale & retail trade) | 28 |
| 18 | orser | soloman | M | 16 | Methodist | German | Ontario | No Occupation Listed | 28 |
| 11 | orton | ann | F | 23 | Methodist | Irish | Ontario | No Occupation Listed | 256 |
| 24 | orton | annie | M | 9 | Methodist | English | Ontario | No Occupation Listed | 303 |
| 2 | orton | david | M | 5 | Methodist | English | Ontario | No Occupation Listed | 303 |
| 10 | orton | james | M | 22 | Methodist | English | Ontario | Farmers, general and nfs | 256 |
| 25 | orton | jane | F | 61 | Methodist | English | Ontario | No Occupation Listed | 236 |
| 4 | orton | jane | F | 1 | Methodist | English | Ontario | No Occupation Listed | 303 |
| 3 | orton | john | M | 9 | Methodist | English | Ontario | No Occupation Listed | 236 |
| 20 | orton | john | M | 39 | Methodist | English | Ontario | Farmers, general and nfs | 303 |
| 1 | orton | john | M | 6 | Methodist | English | Ontario | No Occupation Listed | 303 |
| 24 | orton | joseph | M | 62 | Methodist | English | England | Farmers, general and nfs | 236 |
| 22 | orton | joseph | M | 16 | Methodist | English | Ontario | No Occupation Listed | 303 |
| 21 | orton | mary | F | 38 | Methodist | Irish | Ireland | No Occupation Listed | 303 |
| 12 | orton | moriah | M | 1 | Methodist | English | Ontario | No Occupation Listed | 256 |
| 1 | orton | stephen | M | 35 | Methodist | English | Ontario | Farmers, general and nfs | 236 |
| 25 | orton | stephen | M | 7 | Methodist | English | Ontario | No Occupation Listed | 303 |
| 2 | orton | thomas | M | 30 | Methodist | English | Ontario | Farmers, general and nfs | 236 |
| 3 | orton | thomas | M | 3 | Methodist | English | Ontario | No Occupation Listed | 303 |
| 23 | orton | william | M | 12 | Methodist | English | Ontario | No Occupation Listed | 303 |
| 9 | osler | andrew | M | 18 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 342 |
| 10 | osler | arthur | M | 15 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 342 |
| 7 | osler | charles | M | 21 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 342 |
| 3 | osler | john | M | 64 | Wesleyan Methodist | Scottish | Scotland | Farmers, general and nfs | 342 |
| 8 | osler | john | M | 19 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 342 |
| 6 | osler | manda | F | 23 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 342 |
| 4 | osler | sarah | F | 53 | Wesleyan Methodist | Irish | New Brunswick | No Occupation Listed | 342 |
| 5 | osler | thomas | M | 26 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 342 |
| 18 | overend | annie | F | 2 | Anglican | English | Ontario | No Occupation Listed | 154 |
| 12 | overend | george | M | 15 | Anglican | English | Ontario | No Occupation Listed | 154 |
| 16 | overend | henry | M | 1 | Roman Catholic | English | Ontario | No Occupation Listed | 54 |
| 10 | overend | henry | M | 49 | Anglican | English | England | Farmers, general and nfs | 154 |
| 13 | overend | jane | F | 13 | Anglican | English | Ontario | No Occupation Listed | 154 |
| 16 | overend | jemima | F | 7 | Anglican | English | Ontario | No Occupation Listed | 154 |
| 15 | overend | joseph | M | 9 | Anglican | English | Ontario | No Occupation Listed | 154 |
| 17 | overend | lizzie | F | 4 | Anglican | English | Ontario | No Occupation Listed | 154 |
| 13 | overend | mary | F | 28 | Roman Catholic | English | Ontario | No Occupation Listed | 54 |
| 15 | overend | mary | F | 3 | Roman Catholic | English | Ontario | No Occupation Listed | 54 |
| 14 | overend | matilda | F | 11 | Anglican | English | Ontario | No Occupation Listed | 154 |
| 19 | overend | nary | F | 0 | Anglican | English | Ontario | No Occupation Listed | 154 |
| 11 | overend | sarah | F | 42 | Anglican | English | Ontario | No Occupation Listed | 154 |
| 12 | overend | william | M | 30 | Roman Catholic | English | Ontario | Farmers, general and nfs | 54 |
| 14 | overend | william | M | 5 | Roman Catholic | English | Ontario | No Occupation Listed | 54 |
| 2 | owens | annie | F | 10 | Anglican | Irish | Ontario | No Occupation Listed | 51 |