Residents of Hastings — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 1 | obrien | alexander | M | 54 | Roman Catholic | Scottish | Nova Scotia | Farmers, general and nfs | 44 |
| 6 | obrien | alexander | M | 16 | Roman Catholic | Scottish | Nova Scotia | Farmers, general and nfs | 44 |
| 8 | obrien | allan | M | 10 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 44 |
| 11 | obrien | angus | M | 11 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 5 |
| 5 | obrien | christy | F | 20 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 44 |
| 7 | obrien | dan | M | 14 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 44 |
| 1 | obrien | donald | M | 13 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 58 |
| 2 | obrien | gracy | F | 47 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 44 |
| 5 | obrien | james | M | 28 | Roman Catholic | Irish | Nova Scotia | Drivers (personal, for hire) | 1 |
| 4 | obrien | john | M | 22 | Roman Catholic | Scottish | Nova Scotia | Farmers, general and nfs | 44 |
| 9 | obrien | katie | F | 22 | Roman Catholic | Scottish | Nova Scotia | Servants nfs | 5 |
| 3 | obrien | margaret | F | 24 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 44 |
| 11 | obrien | mary | F | 60 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 45 |
| 10 | obrien | niel | M | 26 | Roman Catholic | Scottish | Nova Scotia | Farmers, general and nfs | 45 |
| 8 | obrien | sarah | F | 20 | Roman Catholic | Scottish | Nova Scotia | Servants nfs | 5 |
| 4 | obrien | sarah | F | 36 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 108 |
| 10 | obrien | sicily | F | 17 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 5 |
| 9 | obrien | william | M | 7 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 44 |