Residents of Brockville Town, South Ward—Quartier Sud — Sub-district B, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 21 | obrene | florance | F | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 113 |
| 18 | obrene | hannah | F | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 113 |
| 20 | obrene | mary | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 113 |
| 19 | obrene | michal | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 113 |
| 17 | obrene | thomas | M | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 113 |
| 3 | obrine | david | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 152 |
| 4 | obrine | james | M | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 152 |
| 25 | obrine | lowisa | F | 27 | Roman Catholic | Irish | United States | No Occupation Listed | 152 |
| 2 | obrine | mary | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 152 |
| 1 | obrine | robt | M | 35 | Roman Catholic | Irish | Ontario | Ambiguous responses | 152 |
| 12 | obrine | william | M | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 106 |
| 15 | oby | clara | F | 17 | Roman Catholic | French | Ontario | Servants nfs | 92 |