Residents of Havelock — Sub-district B, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 9 | odom | charles | M | 37 | Anglican | French | United States | Carpenters | 53 |
| 10 | odom | emma | F | 26 | Anglican | Irish | Quebec | No Occupation Listed | 53 |
| 12 | odom | john | M | 2 | Anglican | Irish | Quebec | No Occupation Listed | 53 |
| 11 | odom | thomas | M | 3 | Anglican | Irish | Quebec | No Occupation Listed | 53 |
| 13 | odom | william | M | 0 | Anglican | Irish | Quebec | No Occupation Listed | 53 |
| 15 | oneill | charles | M | 27 | Presbyterian | Scottish | Quebec | Manufacturers | 125 |
| 18 | oneill | john | M | 0 | Presbyterian | Irish | Quebec | No Occupation Listed | 125 |
| 16 | oneill | john | M | 24 | Presbyterian | Scottish | Quebec | Farmers, general and nfs | 131 |
| 16 | oneill | mary | F | 22 | Presbyterian | Irish | Ontario | No Occupation Listed | 125 |
| 15 | oneill | mary | F | 62 | Presbyterian | Scottish | Scotland | No Occupation Listed | 131 |
| 17 | oneill | william | M | 3 | Presbyterian | Irish | Quebec | No Occupation Listed | 125 |
| 14 | oneill | william | M | 74 | Presbyterian | Irish | Quebec | Farmers, general and nfs | 131 |
| 20 | orr | charlot | F | 23 | Methodist | Irish | Quebec | No Occupation Listed | 64 |
| 4 | orr | eliza | F | 32 | Presbyterian | Irish | Quebec | No Occupation Listed | 109 |
| 18 | orr | elizabeth | F | 50 | Presbyterian | Irish | Ireland | No Occupation Listed | 132 |
| 17 | orr | flora | F | 22 | Anglican | Irish | Quebec | No Occupation Listed | 116 |
| 19 | orr | francis | M | 25 | Methodist | Irish | Quebec | Farmers, general and nfs | 64 |
| 6 | orr | hellen | F | 0 | Presbyterian | Irish | Quebec | No Occupation Listed | 109 |
| 9 | orr | jane | F | 28 | Presbyterian | Irish | Quebec | No Occupation Listed | 110 |
| 16 | orr | maria | F | 48 | Anglican | Irish | Quebec | No Occupation Listed | 116 |
| 10 | orr | mary | F | 4 | Presbyterian | Irish | Quebec | No Occupation Listed | 110 |
| 18 | orr | rosana | F | 48 | Anglican | Irish | Ireland | No Occupation Listed | 116 |
| 5 | orr | samuel | M | 11 | Presbyterian | Irish | Quebec | No Occupation Listed | 109 |
| 8 | orr | samuel | M | 34 | Presbyterian | Irish | Quebec | Farmers, general and nfs | 110 |
| 7 | orr | sarah | F | 70 | Presbyterian | Irish | Ireland | No Occupation Listed | 109 |
| 11 | orr | sarah | F | 2 | Presbyterian | Irish | Quebec | No Occupation Listed | 110 |
| 3 | orr | william | M | 37 | Presbyterian | Irish | Quebec | Farmers, general and nfs | 109 |
| 15 | orr | william | M | 50 | Anglican | Irish | Ireland | Farmers, general and nfs | 116 |