Residents of Alnwick — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 5 | obrein | anna | F | 8 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 44 |
| 25 | obrein | edward | M | 59 | Roman Catholic | Irish | New Brunswick | Farmers, general and nfs | 44 |
| 6 | obrein | elisabeth | F | 6 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 44 |
| 24 | obrein | grace | F | 44 | Roman Catholic | Irish | New Brunswick | Servants nfs | 43 |
| 2 | obrein | james | M | 14 | Roman Catholic | Irish | New Brunswick | Farmers, general and nfs | 44 |
| 1 | obrein | marguerite | F | 37 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 44 |
| 8 | obrein | martin | M | 1 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 44 |
| 4 | obrein | mary | F | 12 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 44 |
| 7 | obrein | mary | F | 4 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 44 |
| 3 | obrein | william | M | 14 | Roman Catholic | Irish | New Brunswick | Farmers, general and nfs | 44 |
| 16 | olanidstine | john | M | 24 | Presbyterian | Scottish | New Brunswick | Farmers, general and nfs | 87 |