Residents of Buckingham, Village — Sub-district B, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 15 | obrien | mary | F | 70 | Roman Catholic | Irish | Ireland | No Occupation Listed | 253 |
| 18 | oconnel | anastasia | F | 30 | Roman Catholic | Irish | Quebec | No Occupation Listed | 14 |
| 15 | oconnel | catherine | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 14 |
| 14 | oconnel | john | M | 68 | Roman Catholic | Irish | Ireland | Labourers nfs | 14 |
| 16 | oconnel | john | M | 29 | Roman Catholic | Irish | Quebec | Labourers nfs | 14 |
| 17 | oconnel | peter | M | 26 | Roman Catholic | Irish | Quebec | Carpenters | 14 |
| 18 | odonnel | catherine | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 194 |
| 21 | odonnel | mary | F | 33 | Roman Catholic | Irish | Quebec | Servants nfs | 42 |
| 19 | odonnel | thomas | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 194 |
| 7 | odowd | edward | M | 26 | Roman Catholic | Irish | Quebec | Labourers nfs | 145 |
| 11 | odowd | john | M | 1 | Roman Catholic | French | Quebec | No Occupation Listed | 150 |
| 6 | odowd | mary | F | 52 | Roman Catholic | Irish | Ireland | No Occupation Listed | 145 |
| 8 | odowd | owen | M | 19 | Roman Catholic | Irish | Quebec | Clerk, nfs | 145 |
| 9 | odowd | patrick | M | 28 | Roman Catholic | Irish | Quebec | Labourers nfs | 150 |
| 10 | odowd | sophie | F | 24 | Roman Catholic | French | Quebec | No Occupation Listed | 150 |
| 5 | odowd | thomas | M | 61 | Roman Catholic | Irish | Ireland | Labourers nfs | 145 |
| 17 | odriscall | florence | F | 1 | Roman Catholic | Irish | Quebec | No Occupation Listed | 64 |
| 16 | odriscall | margret | F | 29 | Roman Catholic | Irish | Quebec | No Occupation Listed | 64 |
| 15 | odriscall | thomas | M | 30 | Roman Catholic | Irish | Quebec | Blacksmiths | 64 |
| 13 | ohagan | annie | F | 16 | Roman Catholic | Irish | Quebec | No Occupation Listed | 9 |
| 14 | ohagan | elizabeth | F | 13 | Roman Catholic | Irish | Quebec | No Occupation Listed | 9 |
| 3 | oilet | francois | M | 71 | Roman Catholic | French | Quebec | Labourers nfs | 230 |
| 9 | oneill | john | M | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 79 |
| 8 | oneill | mary | F | 7 | Roman Catholic | Irish | Quebec | No Occupation Listed | 79 |
| 7 | oneill | susan | F | 11 | Roman Catholic | Irish | Quebec | No Occupation Listed | 79 |
| 5 | oneill | william | M | 53 | Roman Catholic | Irish | Ireland | Dealer, merchant etc. (Wholesale & retail trade) | 79 |
| 6 | oneill | william | M | 9 | Roman Catholic | Irish | Quebec | No Occupation Listed | 79 |
| 21 | oneille | constanse | F | 16 | Roman Catholic | Irish | Quebec | No Occupation Listed | 65 |
| 20 | oneille | constantine | M | 18 | Roman Catholic | Irish | Quebec | Labourers nfs | 65 |
| 24 | oneille | daniel | M | 7 | Roman Catholic | Irish | Quebec | No Occupation Listed | 65 |
| 23 | oneille | james | M | 9 | Roman Catholic | Irish | Quebec | No Occupation Listed | 65 |
| 18 | oneille | john | M | 47 | Roman Catholic | Irish | Ireland | No Occupation Listed | 65 |
| 22 | oneille | john | M | 11 | Roman Catholic | Irish | Quebec | No Occupation Listed | 65 |
| 19 | oneille | mary | F | 39 | Roman Catholic | Irish | Quebec | No Occupation Listed | 65 |
| 25 | oneille | mary | F | 4 | Roman Catholic | Irish | Quebec | No Occupation Listed | 65 |
| 1 | oneille | susan | F | 1 | Roman Catholic | Irish | Quebec | No Occupation Listed | 65 |