Residents of Crosby S — Sub-district K, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 23 | obrien | anne | F | 55 | Roman Catholic | Irish | Ireland | No Occupation Listed | 123 |
| 19 | obrien | bridget | F | 62 | Roman Catholic | Irish | Ireland | No Occupation Listed | 110 |
| 12 | obrien | catherine | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 108 |
| 16 | obrien | catherine | F | 21 | Roman Catholic | English | Ontario | No Occupation Listed | 109 |
| 18 | obrien | catherine | F | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 1 | obrien | catherine | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 123 |
| 8 | obrien | edward | M | 67 | Roman Catholic | Irish | Ireland | Boot and shoemakers and repairers | 108 |
| 22 | obrien | edward | M | 67 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 123 |
| 21 | obrien | eliza | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 110 |
| 20 | obrien | ellen | F | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 110 |
| 10 | obrien | james | M | 27 | Roman Catholic | Irish | Ontario | Pedlars and hawkers | 108 |
| 15 | obrien | james | M | 36 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 109 |
| 24 | obrien | james | M | 24 | Roman Catholic | Irish | Ontario | Miners | 123 |
| 14 | obrien | jane | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 108 |
| 11 | obrien | john | M | 24 | Roman Catholic | Irish | Ontario | Labourers nfs | 108 |
| 13 | obrien | margaret | F | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 108 |
| 17 | obrien | margaret | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 9 | obrien | mary | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 108 |
| 25 | obrien | mary | F | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 123 |
| 5 | oliver | jane | F | 33 | Methodist | English | Ontario | No Occupation Listed | 143 |