Residents of Brockville Town, North Ward—Quartier Nord — Sub-district D, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 7 | obryen | james | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 8 | obryen | john | M | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 6 | obryen | mary | F | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 143 |
| 5 | obryen | micheal | M | 30 | Roman Catholic | Irish | Ontario | Labourers nfs | 143 |
| 2 | odell | agnes | F | 30 | Methodist | Scottish | Ontario | No Occupation Listed | 304 |
| 21 | odell | amos | M | 61 | Methodist | Irish | United States | Brick and tile makers | 303 |
| 22 | odell | caroline | F | 50 | Methodist | Irish | Ontario | No Occupation Listed | 303 |
| 5 | odell | edna | F | 1 | Methodist | Scottish | Ontario | No Occupation Listed | 304 |
| 25 | odell | ellen | F | 22 | Methodist | Irish | Ontario | No Occupation Listed | 303 |
| 24 | odell | ena | F | 25 | Methodist | Irish | Ontario | No Occupation Listed | 303 |
| 3 | odell | frank | M | 7 | Methodist | Scottish | Ontario | No Occupation Listed | 304 |
| 4 | odell | herbert | M | 6 | Methodist | Scottish | Ontario | No Occupation Listed | 304 |
| 1 | odell | norton | M | 30 | Methodist | Irish | Ontario | Brick and tile makers | 304 |
| 23 | odell | wheeler | M | 28 | Methodist | Irish | Ontario | No Occupation Listed | 303 |
| 24 | olmstead | delormey | M | 47 | Methodist | German | Ontario | No Occupation Listed | 228 |
| 25 | olmstead | heneretta | F | 41 | Methodist | German | Ontario | No Occupation Listed | 228 |
| 1 | olmstead | miron | M | 20 | Methodist | German | Ontario | Labourers nfs | 228 |
| 10 | osmond | arthur | M | 28 | Baptist | English | England | Carpenters | 241 |
| 13 | osmond | berthold | M | 0 | Baptist | English | Ontario | No Occupation Listed | 241 |
| 11 | osmond | lorrata | F | 21 | Baptist | Irish | Ontario | No Occupation Listed | 241 |
| 12 | osmond | walter | M | 3 | Baptist | English | Ontario | No Occupation Listed | 241 |
| 12 | owens | elizabeth | F | 63 | Presbyterian | English | England | Labourers nfs | 130 |
| 11 | owens | robert | M | 65 | Presbyterian | English | England | Labourers nfs | 130 |