Residents of Wolfe Island — Sub-district D, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 12 | _oile | allas | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 11 | _oile | charles | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 6 | _oile | eliza | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 45 |
| 8 | _oile | elizabeth | F | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 5 | _oile | john | M | 80 | Roman Catholic | Irish | Ireland | Carpenters | 45 |
| 10 | _oile | john | M | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 9 | _oile | mary | F | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 7 | _oile | ufemie | F | 21 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 17 | obies | jane | F | 30 | Roman Catholic | Irish | Ontario | No Occupation Listed | 42 |
| 16 | obies | john | M | 26 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 42 |
| 13 | obim | james | F | 21 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 14 | obim | mary | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 11 | obrim | betsy | F | 66 | Roman Catholic | Irish | Ireland | No Occupation Listed | 50 |
| 14 | obrim | catherine | F | 23 | Roman Catholic | Irish | Ontario | No Occupation Listed | 50 |
| 13 | obrim | mary | F | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 50 |
| 10 | obrim | michael | M | 69 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 50 |
| 12 | obrim | michael | M | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 50 |
| 9 | oconnell | bridget | F | 23 | Roman Catholic | Irish | Ireland | No Occupation Listed | 32 |
| 8 | oconnell | thomas | M | 29 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 32 |
| 18 | okeefe | elsie | F | 17 | Roman Catholic | Irish | Ireland | No Occupation Listed | 146 |
| 9 | opaynne | barnard | M | 25 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 27 |
| 10 | opaynne | elizabeth | F | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 27 |
| 11 | opaynne | martin | M | 22 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 27 |
| 8 | opaynne | mary | F | 59 | Roman Catholic | Irish | Ireland | No Occupation Listed | 27 |
| 12 | opaynne | mary | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 27 |
| 7 | opaynne | thomas | M | 60 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 27 |
| 6 | oreilly | edward | M | 36 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 100 |
| 7 | oreilly | john | M | 30 | Roman Catholic | Irish | Ontario | Clerk, nfs | 100 |
| 5 | oreilly | mary | F | 28 | Roman Catholic | Irish | Ireland | No Occupation Listed | 100 |
| 3 | oreilly | patrick | M | 36 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 100 |
| 4 | oreilly | rose | F | 68 | Roman Catholic | Irish | Ireland | No Occupation Listed | 100 |
| 8 | oreilly | thomas | M | 25 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 100 |
| 6 | oroac | annie | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 60 |
| 14 | orr | alexander | M | 10 | Presbyterian | Canadian | Ontario | No Occupation Listed | 142 |
| 10 | orr | eliza | F | 39 | Presbyterian | Canadian | Ontario | No Occupation Listed | 142 |
| 15 | orr | henrata | F | 8 | Presbyterian | Canadian | Ontario | No Occupation Listed | 142 |
| 11 | orr | mary | F | 16 | Presbyterian | Canadian | Ontario | No Occupation Listed | 142 |
| 16 | orr | maude | F | 5 | Presbyterian | Canadian | Ontario | No Occupation Listed | 142 |
| 9 | orr | nathenil | M | 56 | Presbyterian | Canadian | Ontario | Other transport equipment operators | 142 |
| 13 | orr | sarah | F | 13 | Presbyterian | Canadian | Ontario | No Occupation Listed | 142 |
| 12 | orr | william | M | 14 | Presbyterian | Canadian | Ontario | No Occupation Listed | 142 |
| 19 | oshea | mary | F | 25 | Roman Catholic | Irish | Ontario | No Occupation Listed | 162 |
| 18 | oshea | michael | M | 32 | Roman Catholic | Irish | Ontario | Seamen | 162 |
| 2 | oshea | peter | M | 20 | Roman Catholic | Irish | Ontario | river drivers | 56 |
| 20 | oshea | thomas | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 162 |
| 19 | owens | charles | M | 69 | Anglican | Irish | Ireland | Carpenters | 3 |