Residents of Middle Londonderry — Sub-district D, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
|---|
| 21 | obrin | elen | F | 14 | Presbyterian | Irish | Nova Scotia | No Occupation Listed | 144 |
| 22 | obrin | sebwyn | M | 3 | Presbyterian | Irish | Nova Scotia | No Occupation Listed | 144 |
| 19 | obrine | daniel | M | 34 | Baptist | French | New Brunswick | Ambiguous responses | 268 |
| 11 | oconnor | edward | M | 40 | Roman Catholic | Irish | Nova Scotia | Tailors and tailoresses | 426 |
| 14 | oconnor | edward | M | 13 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 426 |
| 15 | oconnor | etta | F | 11 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 426 |
| 17 | oconnor | james | M | 5 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 426 |
| 13 | oconnor | joseph | M | 18 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 426 |
| 16 | oconnor | maggie | F | 7 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 426 |
| 12 | oconnor | margaret | F | 40 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 426 |
| 18 | oconnor | raymond | M | 1 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 426 |
| 14 | oconors | george | M | 4 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 280 |
| 10 | oconors | jane | F | 39 | Roman Catholic | Irish | Ireland | No Occupation Listed | 280 |
| 12 | oconors | mary | F | 13 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 280 |
| 9 | oconors | paterick | M | 42 | Roman Catholic | Irish | Cape Breton | Ambiguous responses | 280 |
| 13 | oconors | petter | M | 6 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 280 |
| 11 | oconors | richard | M | 16 | Roman Catholic | Irish | Nova Scotia | Ambiguous responses | 280 |
| 11 | octares | george | M | 2 | Roman Catholic | French | Quebec | No Occupation Listed | 270 |
| 9 | octares | john | M | 7 | Roman Catholic | French | Quebec | No Occupation Listed | 270 |
| 8 | octares | mary | F | 32 | Roman Catholic | French | Quebec | No Occupation Listed | 270 |
| 7 | octares | perrault | M | 31 | Roman Catholic | French | Quebec | Pedlars and hawkers | 270 |
| 10 | octares | ratchel | F | 0 | Roman Catholic | French | Quebec | No Occupation Listed | 270 |
| 18 | odonald | ella | F | 5 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 288 |
| 19 | odonald | george | M | 4 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 288 |
| 16 | odonald | james | M | 34 | Roman Catholic | Irish | Nova Scotia | Pedlars and hawkers | 288 |
| 17 | odonald | martha | F | 32 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 288 |
| 20 | odonald | mary | F | 1 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 288 |
| 11 | oland | bessie | F | 4 | Anglican | Scottish | Nova Scotia | No Occupation Listed | 286 |
| 9 | oland | ester | F | 36 | Anglican | Scottish | Nova Scotia | No Occupation Listed | 286 |
| 8 | oland | ethelred | M | 34 | Anglican | English | England | Dealer, merchant etc. (Wholesale & retail trade) | 286 |
| 12 | oland | george | M | 0 | Anglican | Scottish | Nova Scotia | No Occupation Listed | 286 |
| 10 | oland | mary | F | 6 | Anglican | Scottish | Nova Scotia | No Occupation Listed | 286 |
| 7 | olerey | lousie | F | 27 | Baptist | Scottish | Nova Scotia | No Occupation Listed | 548 |
| 6 | olerey | thomas | M | 24 | Baptist | Scottish | Nova Scotia | No Occupation Listed | 548 |
| 6 | oliver | albert | M | 30 | Presbyterian | Scottish | Nova Scotia | Coach, carriage, cart and wagon makers | 456 |
| 24 | oneal | catherine | F | 24 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 340 |
| 4 | oneal | catherine | F | 2 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 350 |
| 5 | oneal | dennis | M | 30 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 351 |
| 23 | oneal | james | M | 26 | Roman Catholic | Irish | New Brunswick | Occupational title unclassifiable | 340 |
| 25 | oneal | james | M | 2 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 340 |
| 7 | oneal | john | M | 0 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 351 |
| 1 | oneal | lewis | M | 0 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 340 |
| 2 | oneal | mary | F | 33 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 350 |
| 6 | oneal | nellie | F | 18 | Roman Catholic | Irish | Nova Scotia | No Occupation Listed | 351 |
| 1 | oneal | philip | M | 38 | Roman Catholic | Irish | New Brunswick | Labourers nfs | 350 |
| 3 | oneal | william | M | 4 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 350 |
| 25 | oxley | john | M | 22 | Presbyterian | English | Nova Scotia | No Occupation Listed | 202 |
| 24 | oxley | mary | F | 63 | Presbyterian | English | South America | No Occupation Listed | 202 |
| 1 | oxley | minnie | F | 19 | Presbyterian | English | Nova Scotia | No Occupation Listed | 202 |