Residents of Gravenhurst, Town—Ville — Sub-district B, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 19 | olavesan | adolph | M | 29 | Lutheran | Norwegian | Norway | Plasterers | 41 |
| 21 | olavesan | alexander | M | 7 | Lutheran | Norwegian | Ontario | No Occupation Listed | 41 |
| 24 | olavesan | inga | F | 0 | Lutheran | Norwegian | Ontario | No Occupation Listed | 41 |
| 23 | olavesan | john | M | 2 | Lutheran | Norwegian | Ontario | No Occupation Listed | 41 |
| 20 | olavesan | julia | F | 28 | Lutheran | Norwegian | Norway | No Occupation Listed | 41 |
| 22 | olavesan | mary | F | 4 | Lutheran | Norwegian | Ontario | No Occupation Listed | 41 |