Residents of Gower N — Sub-district B, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 11 | obrian | anne | F | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 7 |
| 10 | obrian | john | M | 66 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 7 |
| 12 | obrian | thomas | M | 27 | Roman Catholic | Irish | Ireland | No Occupation Listed | 7 |
| 16 | ocallagan | elisa | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 52 |
| 18 | ocallagan | john | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 52 |
| 15 | ocallagan | mary | F | 42 | Roman Catholic | Irish | Ontario | No Occupation Listed | 52 |
| 17 | ocallagan | mary | F | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 52 |
| 14 | ocallagan | mical | M | 42 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 52 |
| 19 | ocallagan | william | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 52 |
| 6 | ocallaghan | catherine | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 11 | ocallaghan | cornelius | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 15 | ocallaghan | elizabeth | F | 20 | Roman Catholic | German | Ontario | No Occupation Listed | 65 |
| 13 | ocallaghan | ellen | F | 68 | Roman Catholic | Irish | Ireland | No Occupation Listed | 64 |
| 4 | ocallaghan | ellen | F | 2 | Roman Catholic | Irish | Ireland | No Occupation Listed | 67 |
| 5 | ocallaghan | james | M | 36 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 63 |
| 10 | ocallaghan | james | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 7 | ocallaghan | john | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 12 | ocallaghan | john | M | 68 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 64 |
| 14 | ocallaghan | john | M | 35 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 65 |
| 9 | ocallaghan | michael | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 5 | ocallaghan | staphen | M | 26 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 68 |
| 8 | ocallaghan | thomas | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 25 | oconar | danuel | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 47 |
| 24 | oconar | esteur | F | 32 | Roman Catholic | Irish | Ontario | No Occupation Listed | 47 |
| 23 | oconar | jane | F | 96 | Roman Catholic | Irish | Ireland | No Occupation Listed | 47 |
| 22 | oconar | john | M | 30 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 47 |
| 24 | oconnor | ambrose | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 66 |
| 1 | oconnor | catherine | F | 47 | Roman Catholic | Irish | Ontario | No Occupation Listed | 67 |
| 3 | oconnor | ellen | F | 32 | Roman Catholic | Irish | Ontario | No Occupation Listed | 67 |
| 2 | oconnor | henery | M | 33 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 67 |
| 20 | oconnor | james | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 66 |
| 19 | oconnor | jeremiah | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 66 |
| 22 | oconnor | john | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 66 |
| 18 | oconnor | mary | F | 32 | Roman Catholic | Irish | Ontario | No Occupation Listed | 66 |
| 25 | oconnor | mary | F | 77 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 67 |
| 17 | oconnor | mathew | M | 49 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 66 |
| 21 | oconnor | mathew | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 66 |
| 23 | oconnor | stephen | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 66 |
| 7 | ogradn | hariet | F | 47 | Roman Catholic | Irish | Ontario | No Occupation Listed | 209 |
| 6 | ogradn | michal | M | 51 | Roman Catholic | Irish | Ontario | Labourers nfs | 209 |
| 6 | ohaley | anne | F | 83 | Anglican | Irish | Ireland | No Occupation Listed | 61 |
| 7 | ohaley | william | M | 23 | Anglican | Irish | Ontario | Stone masons | 61 |
| 17 | oloughlin | annie | F | 32 | Anglican | Irish | Ireland | No Occupation Listed | 242 |
| 15 | oloughlin | anthony | M | 64 | Anglican | Irish | Ireland | Ministers of Religion | 242 |
| 16 | oloughlin | rebecca | F | 50 | Anglican | Irish | Ireland | No Occupation Listed | 242 |
| 18 | oloughlin | willie | M | 10 | Anglican | Irish | Ireland | No Occupation Listed | 242 |
| 6 | oneal | basil | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 117 |
| 3 | oneal | fraces | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 117 |
| 2 | oneal | john | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 117 |
| 4 | oneal | josiah | M | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 117 |
| 7 | oneal | lorne | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 117 |
| 1 | oneal | lucy | F | 37 | Roman Catholic | French | Ontario | No Occupation Listed | 117 |
| 25 | oneal | michael | M | 38 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 117 |
| 5 | oneal | timothy | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 117 |
| 19 | oneil | jane | F | 36 | Roman Catholic | German | Ontario | No Occupation Listed | 94 |
| 20 | oneil | john | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 94 |
| 22 | oneil | john | M | 77 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 95 |
| 23 | oneil | margret | F | 77 | Roman Catholic | Irish | Ireland | No Occupation Listed | 95 |
| 21 | oneil | mary | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 94 |
| 18 | oneil | timothy | M | 40 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 94 |
| 12 | ovens | amina | F | 1 | Free Baptist | Irish | Ireland | No Occupation Listed | 118 |
| 11 | ovens | eliesebth | F | 3 | Free Baptist | Irish | Ireland | No Occupation Listed | 118 |
| 10 | ovens | hanna | F | 4 | Free Baptist | Irish | Ireland | No Occupation Listed | 118 |
| 8 | ovens | hellan | F | 36 | Free Baptist | Irish | Ireland | No Occupation Listed | 118 |
| 7 | ovens | robert | M | 39 | Free Baptist | Irish | Ireland | Farmers, general and nfs | 118 |
| 9 | ovens | robert | M | 5 | Free Baptist | Irish | Ireland | No Occupation Listed | 118 |