Residents of Chatham — Sub-district J, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 16 | obrien | benjamin | M | 13 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 387 |
| 14 | obrien | caroline | F | 43 | Roman Catholic | Scottish | New Brunswick | No Occupation Listed | 387 |
| 18 | obrien | edward | M | 7 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 387 |
| 13 | obrien | john | M | 40 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 387 |
| 17 | obrien | john | M | 12 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 387 |
| 20 | obrien | margaret | F | 6 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 387 |
| 22 | obrien | mary | F | 2 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 387 |
| 15 | obrien | michael | M | 17 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 387 |
| 19 | obrien | phoebe | F | 6 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 387 |
| 21 | obrien | rose | F | 4 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 387 |
| 23 | obrien | williamina | F | 0 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 387 |
| 3 | obrine | bridget | F | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 423 |
| 6 | obrine | edward | M | 19 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 423 |
| 4 | obrine | joseph | M | 22 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 423 |
| 5 | obrine | richard | M | 21 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 423 |
| 15 | oconnell | marey | F | 34 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 77 |
| 16 | oconnell | marey | F | 15 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 77 |
| 24 | odonald | katie | F | 6 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 353 |
| 25 | odonald | maggie | F | 5 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 353 |
| 22 | odonald | mary | F | 30 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 353 |
| 23 | odonald | mary | F | 8 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 353 |
| 21 | odonald | patrick | M | 34 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 353 |
| 1 | odonald | susan | F | 1 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 353 |
| 18 | odonnel | hugh | M | 40 | Roman Catholic | Irish | New Brunswick | Surveyors, general and nfs | 61 |
| 19 | odonnel | margaret | F | 45 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 61 |
| 20 | odonnel | teressa | F | 12 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 61 |
| 21 | ohern | christina | F | 65 | Roman Catholic | Scottish | Scotland | No Occupation Listed | 268 |
| 16 | ohern | daniel | M | 26 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 267 |
| 18 | ohern | elizabeth | F | 2 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 267 |
| 19 | ohern | james | M | 1 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 267 |
| 20 | ohern | james | M | 68 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 268 |
| 17 | ohern | margaret | F | 25 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 267 |
| 6 | okain | edward | M | 25 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 410 |
| 5 | okain | james | M | 24 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 410 |
| 9 | okain | kate | F | 15 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 410 |
| 8 | okain | mary | F | 19 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 410 |
| 11 | okain | rebacca | F | 49 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 410 |
| 10 | okain | trassie | F | 13 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 410 |
| 7 | okain | william | M | 9 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 410 |
| 25 | okeefe | margaret | F | 20 | Roman Catholic | Irish | New Brunswick | Ambiguous responses | 203 |
| 3 | okeeffe | anne | F | 34 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 156 |
| 5 | okeeffe | bessie | F | 7 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 156 |
| 2 | okeeffe | cornelius | M | 6 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 103 |
| 22 | okeeffe | john | M | 50 | Roman Catholic | Irish | Ireland | Ship boat loaders and dock workers | 100 |
| 2 | okeeffe | john | M | 40 | Roman Catholic | Irish | New Brunswick | Ship boat loaders and dock workers | 156 |
| 6 | okeeffe | john | M | 3 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 156 |
| 23 | okeeffe | mary | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 100 |
| 4 | okeeffe | mary | F | 8 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 156 |
| 1 | okeeffe | michael | M | 29 | Roman Catholic | Irish | New Brunswick | Engineers (US) nfs | 103 |
| 22 | omaley | j | M | 28 | Roman Catholic | Irish | Quebec | Dealer, merchant etc. (Wholesale & retail trade) | 433 |
| 7 | overton | jenie | F | 10 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 22 |