Residents of Brantford E — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 4 | oberlin | adilla | F | 11 | Methodist | German | Ontario | No Occupation Listed | 266 |
| 6 | oberlin | arther | M | 4 | Methodist | German | Ontario | No Occupation Listed | 266 |
| 5 | oberlin | emma | F | 7 | Methodist | German | Ontario | No Occupation Listed | 266 |
| 1 | oberlin | harttvig | M | 40 | Methodist | German | Germany | Farmers, general and nfs | 266 |
| 3 | oberlin | jane | F | 13 | Methodist | German | Ontario | No Occupation Listed | 266 |
| 2 | oberlin | rachel | F | 39 | Methodist | German | Ontario | No Occupation Listed | 266 |
| 10 | obryan | mary | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 3 |
| 11 | obryan | timothy | M | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 3 |
| 21 | oconnor | barthelomew | M | 29 | Roman Catholic | Irish | Ontario | Blacksmiths | 98 |
| 22 | oconnor | elizebeth | F | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 98 |
| 23 | oconnor | rose | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 98 |
| 14 | oles | alexander | M | 56 | Wesleyan Methodist | Scottish | Ontario | Farmers, general and nfs | 11 |
| 20 | oles | ann | F | 77 | Wesleyan Methodist | Blank | Ontario | No Occupation Listed | 12 |
| 17 | oles | charles | M | 14 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 11 |
| 15 | oles | edgar | M | 16 | Methodist | Blank | Ontario | No Occupation Listed | 323 |
| 15 | oles | eliza | F | 54 | Wesleyan Methodist | German | Ontario | No Occupation Listed | 11 |
| 14 | oles | ellen | F | 40 | Methodist | Blank | Ontario | No Occupation Listed | 323 |
| 18 | oles | herbert | M | 4 | Wesleyan Methodist | Scottish | Ontario | No Occupation Listed | 11 |
| 19 | oles | john | M | 83 | Wesleyan Methodist | Blank | Ontario | Carpenters | 12 |
| 5 | orourk | daniel | M | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 113 |
| 2 | orourk | johanna | F | 23 | Roman Catholic | Irish | Ontario | Dressmakers | 113 |
| 1 | orourk | mary | F | 45 | Roman Catholic | Irish | Ireland | No Occupation Listed | 113 |
| 6 | orourk | mary | F | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 113 |
| 4 | orourk | micael | M | 19 | Roman Catholic | Irish | Ontario | Sugar makers | 113 |
| 3 | orourk | thomas | M | 21 | Roman Catholic | Irish | Ontario | Labourers nfs | 113 |
| 25 | orourk | william | M | 50 | Roman Catholic | Irish | Ireland | Labourers nfs | 113 |
| 15 | orr | albert | M | 8 | Methodist | Irish | Ontario | No Occupation Listed | 180 |
| 14 | orr | earnest | M | 11 | Methodist | Irish | Ontario | No Occupation Listed | 180 |
| 13 | orr | edward | M | 13 | Methodist | Irish | Ontario | No Occupation Listed | 180 |
| 11 | orr | jane | F | 41 | Methodist | German | Ontario | No Occupation Listed | 180 |
| 12 | orr | lella | F | 16 | Methodist | Irish | Ontario | No Occupation Listed | 180 |
| 21 | osborne | charless | M | 2 | Baptist | English | Ontario | No Occupation Listed | 129 |
| 20 | osborne | ruth | F | 28 | Baptist | English | Ontario | No Occupation Listed | 129 |
| 19 | osborne | william | M | 31 | Baptist | English | Ontario | Farmers, general and nfs | 129 |