Residents of Township No. 4 — Sub-district D, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 17 | obrien | anselun | M | 5 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 248 |
| 21 | obrien | bridget | F | 0 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 132 |
| 13 | obrien | david | M | 7 | Methodist | Irish | Prince Edward Island | No Occupation Listed | 73 |
| 18 | obrien | dennis | M | 31 | Roman Catholic | Irish | Prince Edward Island | Farmers, general and nfs | 132 |
| 24 | obrien | dennis | M | 4 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 133 |
| 19 | obrien | eliza | F | 3 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 248 |
| 23 | obrien | ellen | F | 30 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 133 |
| 12 | obrien | flora | F | 28 | Methodist | Scottish | Prince Edward Island | No Occupation Listed | 73 |
| 20 | obrien | fredrick | M | 1 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 132 |
| 13 | obrien | honora | F | 33 | Roman Catholic | Irish | Ireland | No Occupation Listed | 248 |
| 18 | obrien | honora | F | 4 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 248 |
| 19 | obrien | jane | F | 25 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 132 |
| 15 | obrien | jessie | F | 0 | Methodist | Irish | Prince Edward Island | No Occupation Listed | 73 |
| 20 | obrien | johanna | F | 0 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 248 |
| 14 | obrien | margaret | F | 9 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 248 |
| 1 | obrien | martin | M | 1 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 133 |
| 15 | obrien | mary | F | 8 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 248 |
| 11 | obrien | michael | M | 25 | Methodist | Irish | Prince Edward Island | No Occupation Listed | 73 |
| 16 | obrien | michael | M | 6 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 248 |
| 19 | obrien | michael | M | 28 | Roman Catholic | Irish | Prince Edward Island | Farmers, general and nfs | 253 |
| 22 | obrien | patric | M | 34 | Roman Catholic | Irish | Prince Edward Island | Farmers, general and nfs | 133 |
| 12 | obrien | patrick | M | 37 | Roman Catholic | Irish | Prince Edward Island | Farmers, general and nfs | 248 |
| 14 | obrien | theof | M | 3 | Methodist | Irish | Prince Edward Island | No Occupation Listed | 73 |
| 17 | obrien | thomas | M | 25 | Roman Catholic | Irish | Prince Edward Island | Saddler and harness maker | 225 |
| 25 | obrien | william | M | 3 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 133 |
| 21 | oconnor | edward | M | 16 | Roman Catholic | Irish | Prince Edward Island | Servants nfs | 222 |
| 3 | ohalloran | alice | F | 15 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 91 |
| 2 | ohalloran | archd | M | 40 | Roman Catholic | Irish | Prince Edward Island | Teachers (unspecified) | 170 |
| 1 | ohalloran | arnold | M | 22 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 91 |
| 3 | ohalloran | flora | F | 15 | Anglican | Irish | New Brunswick | No Occupation Listed | 291 |
| 2 | ohalloran | jane | F | 25 | Anglican | Irish | Prince Edward Island | No Occupation Listed | 291 |
| 8 | ohalloran | john | M | 34 | Roman Catholic | Irish | Prince Edward Island | Coach, carriage, cart and wagon makers | 65 |
| 2 | ohalloran | john | M | 13 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 91 |
| 25 | ohalloran | mary | F | 53 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 91 |
| 24 | ohalloran | michael | M | 53 | Roman Catholic | Irish | Prince Edward Island | Farmers, general and nfs | 91 |
| 23 | ohearn | maggie | F | 21 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 17 |
| 22 | ohearn | peter | M | 26 | Roman Catholic | Irish | Prince Edward Island | Farmers, general and nfs | 17 |
| 5 | oholloran | arthur | M | 1 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 52 |
| 24 | oholloran | ellen | F | 35 | Roman Catholic | French | Newfoundland | No Occupation Listed | 52 |
| 4 | oholloran | frederick | M | 3 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 52 |
| 1 | oholloran | john | M | 12 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 52 |
| 23 | oholloran | maurice | M | 41 | Roman Catholic | French | Prince Edward Island | Coach, carriage, cart and wagon makers | 52 |
| 25 | oholloran | patrick | M | 14 | Roman Catholic | French | Prince Edward Island | No Occupation Listed | 52 |
| 2 | oholloran | peter | M | 10 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 52 |
| 3 | oholloran | walter | M | 5 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 52 |
| 13 | oliver | catherine | F | 12 | Presbyterian | English | Prince Edward Island | No Occupation Listed | 176 |
| 7 | oliver | dilla | F | 9 | Anglican | English | Prince Edward Island | No Occupation Listed | 352 |
| 12 | oliver | georgina | F | 14 | Presbyterian | English | Prince Edward Island | No Occupation Listed | 176 |
| 5 | oliver | henry | M | 48 | Anglican | English | England | Farmers, general and nfs | 352 |
| 9 | oliver | john | M | 37 | Presbyterian | English | Prince Edward Island | Farmers, general and nfs | 176 |
| 17 | oliver | john | M | 3 | Presbyterian | English | Prince Edward Island | No Occupation Listed | 176 |
| 12 | oliver | john | M | 24 | Presbyterian | English | Prince Edward Island | Military, specialisation unknown | 328 |
| 10 | oliver | mary | F | 37 | Presbyterian | Scottish | Prince Edward Island | No Occupation Listed | 176 |
| 16 | oliver | mary | F | 6 | Presbyterian | English | Prince Edward Island | No Occupation Listed | 176 |
| 18 | oliver | nelson | M | 1 | Presbyterian | English | Prince Edward Island | No Occupation Listed | 176 |
| 15 | oliver | sarah | F | 8 | Presbyterian | English | Prince Edward Island | No Occupation Listed | 176 |
| 14 | oliver | soloman | M | 10 | Presbyterian | English | Prince Edward Island | No Occupation Listed | 176 |
| 11 | oliver | william | M | 16 | Presbyterian | English | Prince Edward Island | Farmers, general and nfs | 176 |
| 6 | olver | hannah | F | 50 | Anglican | English | Newfoundland | No Occupation Listed | 352 |
| 13 | omara | bridget | F | 0 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 93 |
| 10 | omara | julia | F | 66 | Roman Catholic | Irish | Ireland | No Occupation Listed | 92 |
| 12 | omara | margaret | F | 19 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 93 |
| 11 | omara | william | M | 30 | Roman Catholic | Irish | Prince Edward Island | Farmers, general and nfs | 93 |