Residents of Orillia, Matchedash — Sub-district N, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 13 | obrien | denis | M | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 468 |
| 16 | obrien | edward | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 468 |
| 18 | obrien | frank | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 468 |
| 17 | obrien | fredrick | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 468 |
| 20 | obrien | george | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 468 |
| 15 | obrien | john | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 468 |
| 11 | obrien | marey | F | 30 | Roman Catholic | Irish | Ireland | No Occupation Listed | 468 |
| 10 | obrien | patrick | M | 57 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 468 |
| 14 | obrien | richard | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 468 |
| 19 | obrien | sarsfield | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 468 |
| 12 | obrien | william | M | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 468 |
| 16 | oconnal | barnard | M | 66 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 67 |
| 17 | oconnal | jane | F | 68 | Roman Catholic | Irish | Ireland | No Occupation Listed | 67 |
| 2 | oconner | timothy | M | 77 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 415 |
| 3 | oconnor | cornelius | M | 54 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 34 |
| 13 | oconnor | daniel | M | 48 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 503 |
| 15 | oconnor | dennis | M | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 503 |
| 4 | oconnor | elizabeth | F | 44 | Roman Catholic | Irish | Ireland | No Occupation Listed | 34 |
| 16 | oconnor | ellen | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 503 |
| 19 | oconnor | hanorah | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 503 |
| 17 | oconnor | jeremiah | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 503 |
| 1 | oconnor | john | M | 28 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 108 |
| 21 | oconnor | julia | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 503 |
| 18 | oconnor | marey | F | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 503 |
| 20 | oconnor | margeret | F | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 503 |
| 14 | oconnor | timothy | M | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 503 |
| 21 | odell | edmund | M | 45 | Anglican | Irish | Ireland | Farmers, general and nfs | 129 |
| 22 | odell | hariet | F | 40 | Anglican | Irish | Ireland | No Occupation Listed | 129 |
| 23 | odell | marien | F | 23 | Anglican | Irish | Ontario | No Occupation Listed | 129 |
| 14 | odonell | ann | F | 38 | Roman Catholic | Irish | Ireland | No Occupation Listed | 21 |
| 19 | odonell | catherine | F | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 21 |
| 17 | odonell | james | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 21 |
| 16 | odonell | john | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 21 |
| 18 | odonell | marey | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 21 |
| 20 | odonell | margeret | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 21 |
| 15 | odonell | michael | M | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 21 |
| 13 | odonell | william | M | 42 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 21 |
| 23 | okley | henery | M | 50 | Anglican | English | England | Farmers, general and nfs | 462 |
| 1 | okley | henery | M | 20 | Anglican | English | England | No Occupation Listed | 462 |
| 5 | okley | isabel | F | 4 | Anglican | English | Ontario | No Occupation Listed | 462 |
| 2 | okley | james | M | 18 | Anglican | English | England | No Occupation Listed | 462 |
| 3 | okley | john | M | 16 | Anglican | English | England | No Occupation Listed | 462 |
| 4 | okley | luis | M | 12 | Anglican | English | England | No Occupation Listed | 462 |
| 24 | okley | marth | F | 45 | Anglican | English | England | No Occupation Listed | 462 |
| 25 | okley | thomas | M | 24 | Anglican | English | England | No Occupation Listed | 462 |
| 6 | okley | william | M | 2 | Anglican | English | Ontario | No Occupation Listed | 462 |
| 1 | oneal | ann | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 22 | oneal | catherine | F | 37 | Roman Catholic | Irish | Ireland | No Occupation Listed | 22 |
| 3 | oneal | catherine | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 4 | oneal | clara | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 2 | oneal | james | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 25 | oneal | john | M | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 5 | oneal | joseph | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 23 | oneal | marey | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 24 | oneal | margaret | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 21 | oneal | michael | M | 60 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 22 |
| 15 | ord | joseph | M | 65 | Methodist | English | England | Veterinarians | 17 |
| 16 | ord | marey | F | 39 | Methodist | Irish | Ontario | No Occupation Listed | 17 |
| 18 | ord | rosanna | F | 4 | Methodist | English | Ontario | No Occupation Listed | 17 |
| 17 | ord | william | M | 9 | Methodist | English | Ontario | No Occupation Listed | 17 |
| 24 | ormsby | agnes | F | 3 | Presbyterian | Scottish | Ontario | No Occupation Listed | 159 |
| 23 | ormsby | elizabeth | F | 25 | Presbyterian | Scottish | Ontario | No Occupation Listed | 159 |
| 22 | ormsby | john | M | 33 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 159 |
| 5 | orr | john | M | 25 | Methodist | Irish | Ontario | Farmers, general and nfs | 426 |
| 6 | orr | margerete | F | 20 | Methodist | Irish | Ontario | No Occupation Listed | 426 |
| 3 | overand | charles | M | 10 | Methodist | English | Ontario | No Occupation Listed | 513 |
| 4 | overand | isabella | F | 8 | Methodist | English | Ontario | No Occupation Listed | 513 |
| 24 | overand | james | M | 44 | Anglican | English | England | Farmers, general and nfs | 513 |
| 2 | overand | james | M | 12 | Methodist | English | Ontario | No Occupation Listed | 513 |
| 5 | overand | marey | F | 1 | Methodist | English | Ontario | No Occupation Listed | 513 |
| 17 | overand | maria | F | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 225 |
| 25 | overand | mariah | F | 46 | Methodist | English | Ontario | No Occupation Listed | 513 |
| 16 | overand | thomas | M | 27 | Roman Catholic | English | Ontario | Manufacturers | 225 |
| 1 | overand | | M | 19 | Methodist | English | Ontario | No Occupation Listed | 513 |
| 8 | owen | agnes | F | 0 | Anglican | English | Ontario | No Occupation Listed | 429 |
| 1 | owen | albenia | F | 34 | Anglican | English | England | No Occupation Listed | 429 |
| 4 | owen | annie | F | 11 | Anglican | English | Ontario | No Occupation Listed | 429 |
| 7 | owen | emma | F | 2 | Anglican | English | Ontario | No Occupation Listed | 429 |
| 2 | owen | fredrick | M | 14 | Anglican | English | England | No Occupation Listed | 429 |
| 6 | owen | harry | M | 6 | Anglican | English | Ontario | No Occupation Listed | 429 |
| 5 | owen | jennie | F | 9 | Anglican | English | Ontario | No Occupation Listed | 429 |
| 3 | owen | joseph | M | 13 | Anglican | English | England | No Occupation Listed | 429 |
| 25 | own | joe | M | 38 | Anglican | English | England | Gardeners nfs | 429 |