Residents of St. John City, Queens ward-quartier — Sub-district D, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 7 | obren | fredr | M | 7 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 176 |
| 6 | obren | nancy | F | 38 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 176 |
| 8 | obren | william | M | 5 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 176 |
| 24 | obrien | ellen | F | 22 | Roman Catholic | Irish | New Brunswick | Servants nfs | 244 |
| 3 | obrien | ellen | F | 30 | Roman Catholic | Irish | Ireland | Servants nfs | 107 |
| 16 | obrien | susan | F | 22 | Roman Catholic | Irish | New Brunswick | Servants nfs | 193 |
| 17 | oconell | briget | F | 44 | Roman Catholic | Irish | Ireland | Servants nfs | 118 |
| 4 | oconner | briget | F | 24 | Roman Catholic | Irish | Nova Scotia | Servants nfs | 40 |
| 13 | oconns | waddel | M | 21 | Roman Catholic | Irish | New Brunswick | Medical Doctors and physicians (not UK) | 14 |
| 10 | odell | isabella | F | 50 | Methodist | Scottish | New Brunswick | Washing and laundry services | 246 |
| 2 | odger | alice | F | 18 | Baptist | English | New Brunswick | Servants nfs | 64 |
| 5 | oldrieve | mary | F | 52 | Christian | Dutch | New Brunswick | No Occupation Listed | 200 |
| 4 | oldrieve | william | M | 78 | Christian | English | England | Seamen | 200 |
| 2 | oneil | jane | F | 51 | Roman Catholic | Irish | Ireland | No Occupation Listed | 199 |
| 24 | oniel | mary | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 199 |
| 25 | oniel | mary | F | 7 | Roman Catholic | Irish | Ireland | No Occupation Listed | 199 |
| 12 | oregan | mary | F | 42 | Roman Catholic | Irish | Ireland | No Occupation Listed | 25 |
| 11 | oregan | patrick | M | 54 | Roman Catholic | Irish | Ireland | Ambiguous responses | 25 |
| 13 | oregan | thomas | M | 18 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 25 |
| 8 | orourke | david | M | 55 | Roman Catholic | Irish | Ireland | Caretakers and janitors | 73 |
| 10 | orourke | henry | M | 4 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 8 |
| 11 | orourke | roema | F | 2 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 8 |
| 9 | orourke | thomas | M | 82 | Roman Catholic | Irish | New Brunswick | Seamen | 8 |
| 17 | orr | amie | F | 37 | Anglican | Irish | New Brunswick | No Occupation Listed | 178 |
| 18 | orr | edith | F | 9 | Anglican | Irish | New Brunswick | No Occupation Listed | 178 |
| 16 | orr | james | M | 37 | Anglican | Irish | Ireland | Blacksmiths | 178 |
| 10 | osborne | joseph | M | 10 | | Scottish | New Brunswick | No Occupation Listed | 216 |
| 14 | osbuse | ema | F | 18 | Anglican | English | New Brunswick | Servants nfs | 196 |
| 23 | osha_y | kate | F | 18 | Roman Catholic | Irish | New Brunswick | Servants nfs | 240 |