Residents of Seymour — Sub-district G, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 3 | oconnor | edward | M | 23 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 158 |
| 11 | oconnor | ellen | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 5 | oconnor | jeremiah | M | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 4 | oconnor | johanna | F | 52 | Roman Catholic | Irish | Ireland | No Occupation Listed | 158 |
| 6 | oconnor | john | M | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 8 | oconnor | julia | F | 21 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 9 | oconnor | katie | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 10 | oconnor | mary | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 7 | oconnor | patrick | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 158 |
| 19 | odell | frances | F | 54 | Anglican | English | Ontario | No Occupation Listed | 82 |
| 18 | odell | john | M | 60 | Anglican | English | Ontario | No Occupation Listed | 82 |
| 20 | odie | alexander | M | 10 | Anglican | Scottish | Ontario | No Occupation Listed | 206 |
| 16 | odie | jane | F | 35 | Anglican | Scottish | Ontario | No Occupation Listed | 206 |
| 23 | odie | jane | F | 5 | Anglican | Scottish | Ontario | No Occupation Listed | 206 |
| 22 | odie | jessie | F | 6 | Anglican | Scottish | Ontario | No Occupation Listed | 206 |
| 18 | odie | john | M | 14 | Anglican | Scottish | Ontario | Farmers, general and nfs | 206 |
| 24 | odie | lena | F | 1 | Anglican | Scottish | Ontario | No Occupation Listed | 206 |
| 17 | odie | mary | F | 17 | Anglican | Scottish | Ontario | No Occupation Listed | 206 |
| 15 | odie | thomas | M | 39 | Anglican | Scottish | Ontario | Farmers, general and nfs | 206 |
| 21 | odie | thomas | M | 8 | Anglican | Scottish | Ontario | No Occupation Listed | 206 |
| 19 | odie | william | M | 12 | Anglican | Scottish | Ontario | No Occupation Listed | 206 |
| 12 | oliver | fletcher | M | 4 | Episcopal Methodist | English | Ontario | No Occupation Listed | 72 |
| 11 | oliver | frank | M | 7 | Episcopal Methodist | English | Ontario | No Occupation Listed | 72 |
| 10 | oliver | frasher | M | 8 | Episcopal Methodist | English | Ontario | No Occupation Listed | 72 |
| 13 | oliver | harry | M | 2 | Episcopal Methodist | English | Ontario | No Occupation Listed | 72 |
| 9 | oliver | mary | F | 35 | Episcopal Methodist | English | Ontario | No Occupation Listed | 72 |
| 8 | oliver | richard | M | 35 | Episcopal Methodist | English | England | Farmers, general and nfs | 72 |
| 1 | osullivan | betsy | F | 40 | Roman Catholic | Irish | Ontario | No Occupation Listed | 176 |
| 4 | osullivan | cornelius | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 176 |
| 25 | osullivan | daniel | M | 47 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 176 |
| 2 | osullivan | john | M | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 176 |
| 3 | osullivan | joseph | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 176 |
| 21 | ouens | dennis | M | 18 | Anglican | Irish | Ontario | No Occupation Listed | 48 |
| 18 | ouens | james | M | 46 | Anglican | Irish | Ireland | Farmers, general and nfs | 48 |
| 24 | ouens | james | M | 9 | Anglican | Irish | Ontario | No Occupation Listed | 48 |
| 20 | ouens | joseph | M | 20 | Anglican | Irish | Ontario | No Occupation Listed | 48 |
| 19 | ouens | margaret | F | 40 | Anglican | Irish | Ireland | No Occupation Listed | 48 |
| 22 | ouens | mary | F | 16 | Anglican | Irish | Ontario | No Occupation Listed | 48 |
| 1 | ouens | mary | F | 70 | Anglican | English | Ireland | No Occupation Listed | 48 |
| 25 | ouens | sarah | F | 6 | Anglican | Irish | Ontario | No Occupation Listed | 48 |
| 23 | ouens | william | M | 14 | Anglican | Irish | Ontario | No Occupation Listed | 48 |