Residents of St. John City, Dufferin ward-quartier — Sub-district E, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 7 | obrien | bridget | F | 47 | Roman Catholic | Irish | Ireland | No Occupation Listed | 556 |
| 25 | obrien | catharine | F | 45 | Roman Catholic | Irish | Ireland | No Occupation Listed | 279 |
| 15 | obrien | charles | M | 10 | Roman Catholic | French | New Brunswick | No Occupation Listed | 53 |
| 2 | obrien | denis | M | 18 | Roman Catholic | Irish | New Brunswick | Boot and shoemakers and repairers | 279 |
| 23 | obrien | elizabeth | F | 38 | Anglican | Irish | New Brunswick | No Occupation Listed | 637 |
| 17 | obrien | freddie | M | 5 | Roman Catholic | French | New Brunswick | No Occupation Listed | 53 |
| 11 | obrien | frederick | M | 46 | Roman Catholic | French | New Brunswick | Labourers nfs | 53 |
| 1 | obrien | george | M | 20 | Roman Catholic | Irish | New Brunswick | Boot and shoemakers and repairers | 279 |
| 4 | obrien | james | M | 11 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 279 |
| 16 | obrien | john | M | 7 | Roman Catholic | French | New Brunswick | No Occupation Listed | 53 |
| 6 | obrien | john | M | 6 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 279 |
| 6 | obrien | john | M | 47 | Roman Catholic | Irish | New Brunswick | Carpenters | 556 |
| 12 | obrien | mary | F | 42 | Roman Catholic | Irish | Ireland | No Occupation Listed | 53 |
| 14 | obrien | mary | F | 13 | Roman Catholic | French | New Brunswick | No Occupation Listed | 53 |
| 13 | obrien | matilda | F | 16 | Roman Catholic | French | New Brunswick | No Occupation Listed | 53 |
| 5 | obrien | timothy | M | 9 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 279 |
| 24 | obrien | william | M | 50 | Roman Catholic | Irish | Ireland | Labourers nfs | 279 |
| 3 | obrien | william | M | 16 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 279 |
| 20 | ocallaghan | cornelius | M | 56 | Roman Catholic | Irish | Ireland | Labourers nfs | 691 |
| 21 | ocallaghan | margaret | F | 56 | Roman Catholic | Irish | Ireland | No Occupation Listed | 691 |
| 22 | oconnor | annie | F | 18 | Roman Catholic | Irish | New Brunswick | Servants nfs | 718 |
| 9 | odell | emma | F | 14 | Anglican | Irish | New Brunswick | Telegraph operators | 728 |
| 7 | odell | isabella | F | 37 | Anglican | Irish | New Brunswick | Manufacturers | 728 |
| 8 | odell | minnie | F | 16 | Anglican | Irish | New Brunswick | Telegraph operators | 728 |
| 11 | odonnell | james | M | 36 | Roman Catholic | Irish | New Brunswick | Boiler makers | 189 |
| 13 | odonnell | joseph | M | 1 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 189 |
| 22 | odonnell | margaret | F | 83 | Roman Catholic | Irish | Ireland | No Occupation Listed | 559 |
| 12 | odonnell | mary | F | 34 | Roman Catholic | Irish | Ireland | No Occupation Listed | 189 |
| 2 | ogler | emma | F | 2 | Methodist | English | New Brunswick | No Occupation Listed | 638 |
| 1 | ogler | maud | F | 4 | Methodist | English | New Brunswick | No Occupation Listed | 638 |
| 25 | ogler | sarah | F | 23 | Methodist | Irish | New Brunswick | No Occupation Listed | 638 |
| 24 | ogler | thomas | M | 26 | Methodist | English | New Brunswick | Labourers nfs | 638 |
| 4 | ohara | charles | M | 30 | Roman Catholic | Irish | New Brunswick | Barbers | 56 |
| 22 | ohara | daniel | M | 60 | Roman Catholic | Irish | Ireland | Labourers nfs | 22 |
| 3 | ohara | daniel | M | 18 | Roman Catholic | Irish | New Brunswick | Ship’s carpenter | 22 |
| 23 | ohara | ellen | F | 27 | Roman Catholic | Irish | New Brunswick | Tailors and tailoresses | 22 |
| 5 | ohara | ellen | F | 27 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 56 |
| 2 | ohara | esther | F | 20 | Roman Catholic | Irish | New Brunswick | Tailors and tailoresses | 22 |
| 6 | ohara | frank | M | 2 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 56 |
| 24 | ohara | maggie | F | 25 | Roman Catholic | Irish | New Brunswick | Dressmakers | 22 |
| 25 | ohara | martha | F | 24 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 22 |
| 1 | ohara | sarah | F | 22 | Roman Catholic | Irish | New Brunswick | Tailors and tailoresses | 22 |
| 4 | ohara | susan | F | 17 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 22 |
| 5 | ohara | thomas | M | 15 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 22 |
| 6 | ohara | william | M | 13 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 22 |
| 10 | oleary | denis | M | 36 | Roman Catholic | Irish | Ireland | Labourers nfs | 461 |
| 11 | oleary | hannah | F | 31 | Roman Catholic | Irish | England | No Occupation Listed | 461 |
| 22 | olson | christain | M | 43 | Anglican | Norwegian | Norway | Ships Masters and captains (Sea or Inland Waterways) | 214 |
| 24 | olson | edgar | M | 11 | Roman Catholic | Norwegian | New Brunswick | No Occupation Listed | 214 |
| 1 | olson | ida | F | 8 | Roman Catholic | Norwegian | New Brunswick | No Occupation Listed | 214 |
| 2 | olson | klaus | M | 5 | Roman Catholic | Norwegian | New Brunswick | No Occupation Listed | 214 |
| 16 | olson | lucy | F | 39 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 213 |
| 23 | olson | margaret | F | 37 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 214 |
| 3 | olson | margaret | F | 3 | Roman Catholic | Norwegian | New Brunswick | No Occupation Listed | 214 |
| 15 | olson | neilson | M | 38 | Anglican | Norwegian | Norway | Seamen | 213 |
| 4 | olson | richard | M | 0 | Roman Catholic | Norwegian | New Brunswick | No Occupation Listed | 214 |
| 25 | olson | walter | M | 10 | Roman Catholic | Norwegian | New Brunswick | No Occupation Listed | 214 |
| 25 | oneill | ann | F | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 450 |
| 3 | oneill | annie | F | 19 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 450 |
| 23 | oneill | catharine | F | 19 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 555 |
| 4 | oneill | charles | M | 4 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 555 |
| 23 | oneill | daniel | M | 42 | Roman Catholic | Irish | New Brunswick | Other surveyors | 186 |
| 2 | oneill | daniel | M | 21 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 450 |
| 2 | oneill | denis | M | 28 | Roman Catholic | Irish | New Brunswick | Boot and shoemakers and repairers | 55 |
| 1 | oneill | ellen | F | 67 | Roman Catholic | Irish | Ireland | No Occupation Listed | 55 |
| 24 | oneill | ellen | F | 40 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 186 |
| 21 | oneill | frank | M | 48 | Roman Catholic | Irish | Ireland | Labourers nfs | 555 |
| 1 | oneill | hugh | M | 13 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 555 |
| 13 | oneill | james | M | 74 | Roman Catholic | Irish | Ireland | Ship’s carpenter | 352 |
| 25 | oneill | james | M | 15 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 555 |
| 24 | oneill | john | M | 58 | Roman Catholic | Irish | Ireland | Labourers nfs | 450 |
| 13 | oneill | kate | F | 25 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 206 |
| 14 | oneill | kate | F | 21 | Roman Catholic | Irish | New Brunswick | Servants nfs | 717 |
| 24 | oneill | lillie | F | 17 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 555 |
| 22 | oneill | margaret | F | 45 | Roman Catholic | Irish | Ireland | No Occupation Listed | 555 |
| 1 | oneill | mary | F | 22 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 450 |
| 3 | oneill | mary | F | 7 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 555 |
| 7 | oneill | minnie | F | 14 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 618 |
| 22 | oneill | sarah | F | 93 | Roman Catholic | Irish | Ireland | No Occupation Listed | 186 |
| 25 | oneill | sarah | F | 6 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 186 |
| 12 | oneill | thomas | M | 36 | Roman Catholic | Irish | New Brunswick | Ship’s carpenter | 206 |
| 2 | oneill | william | M | 11 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 555 |
| 1 | oneill | wm | M | 3 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 186 |
| 4 | orr | annie | F | 32 | Free Baptist | Scottish | New Brunswick | No Occupation Listed | 575 |
| 7 | orr | annie | F | 4 | Free Baptist | Irish | New Brunswick | No Occupation Listed | 575 |
| 5 | orr | elizabeth | F | 6 | Free Baptist | Irish | New Brunswick | No Occupation Listed | 575 |
| 6 | orr | jessie | F | 4 | Free Baptist | Irish | New Brunswick | No Occupation Listed | 575 |
| 8 | orr | margaret | F | 2 | Free Baptist | Irish | New Brunswick | No Occupation Listed | 575 |
| 3 | orr | samuel | M | 30 | Anglican | Irish | Ireland | Labourers nfs | 575 |
| 16 | orr | sarah | F | 70 | Roman Catholic | Irish | Ireland | No Occupation Listed | 547 |
| 15 | owens | agnes | F | 9 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 503 |
| 20 | owens | elizabeth | F | 30 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 504 |
| 18 | owens | james | M | 0 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 503 |
| 14 | owens | jane | F | 33 | Anglican | English | England | No Occupation Listed | 503 |
| 16 | owens | john | M | 4 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 503 |
| 19 | owens | mary | F | 60 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 504 |
| 13 | owens | thomas | M | 32 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 503 |
| 17 | owens | william | M | 2 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 503 |
| 21 | owens | william | M | 24 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 504 |