Residents of Blenheim, Town—Ville — Sub-district E, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 16 | olding | e | M | 26 | Anglican | English | England | Butchers | 85 |
| 23 | orr | bertha | F | 5 | Methodist | English | Ontario | No Occupation Listed | 152 |
| 21 | orr | cyntha | F | 24 | Methodist | English | Ontario | No Occupation Listed | 152 |
| 24 | orr | florence | F | 2 | Methodist | English | Ontario | No Occupation Listed | 152 |
| 22 | orr | mary | F | 7 | Methodist | English | Ontario | No Occupation Listed | 152 |
| 20 | orr | samuel | M | 28 | Methodist | English | Ontario | Brick and tile makers | 152 |
| 25 | orr | thomas | M | 0 | Methodist | English | Ontario | No Occupation Listed | 152 |
| 15 | osborn | ann | F | 51 | Anglican | Irish | Ontario | No Occupation Listed | 68 |
| 14 | osborn | edward | M | 48 | Anglican | English | England | Real estate agents | 68 |
| 17 | osborn | minnie | F | 23 | Anglican | English | Ontario | No Occupation Listed | 68 |
| 16 | osborn | william | M | 21 | Anglican | English | Ontario | Dealer, merchant etc. (Wholesale & retail trade) | 68 |