Residents of Chapeau (Village), Allumette Island — Sub-district O, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 21 | obrian | anne | F | 63 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 268 |
| 23 | obrian | anne | F | 23 | Roman Catholic | Irish | Quebec | No Occupation Listed | 268 |
| 22 | obrian | petre | M | 26 | Roman Catholic | Irish | Quebec | Lumberers and loggers | 268 |
| 14 | obrien | catherine | F | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 87 |
| 10 | obrien | john | M | 36 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 87 |
| 16 | obrien | john | M | 2 | Roman Catholic | Irish | Quebec | No Occupation Listed | 87 |
| 11 | obrien | mary | F | 32 | Roman Catholic | Irish | Ontario | No Occupation Listed | 75 |
| 11 | obrien | mary | F | 30 | Roman Catholic | Irish | Quebec | No Occupation Listed | 87 |
| 10 | obrien | petre | M | 70 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 75 |
| 12 | obrien | petre | M | 9 | Roman Catholic | Irish | Quebec | No Occupation Listed | 87 |
| 13 | obrien | rosemary | F | 7 | Roman Catholic | Irish | Quebec | No Occupation Listed | 87 |
| 15 | obrien | william | M | 3 | Roman Catholic | Irish | Quebec | No Occupation Listed | 87 |
| 14 | obryan | agustine | M | 0 | Roman Catholic | Irish | Quebec | No Occupation Listed | 266 |
| 10 | obryan | dennis | M | 8 | Roman Catholic | Irish | Quebec | No Occupation Listed | 266 |
| 9 | obryan | francess | F | 32 | Roman Catholic | Irish | Quebec | No Occupation Listed | 266 |
| 8 | obryan | john | M | 39 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 266 |
| 11 | obryan | margaret | F | 8 | Roman Catholic | Irish | Quebec | No Occupation Listed | 266 |
| 13 | obryan | mary | F | 3 | Roman Catholic | Irish | Quebec | No Occupation Listed | 266 |
| 12 | obryan | michael | M | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 266 |
| 15 | obryan | thomas | M | 0 | Roman Catholic | Irish | Quebec | No Occupation Listed | 266 |
| 7 | odonnell | edward | M | 4 | Roman Catholic | Irish | Quebec | No Occupation Listed | 252 |
| 13 | odonnell | joseph | M | 11 | Roman Catholic | Irish | Quebec | No Occupation Listed | 136 |
| 11 | odonnell | mary | F | 35 | Roman Catholic | Irish | Quebec | No Occupation Listed | 136 |
| 12 | odonnell | mary | F | 12 | Roman Catholic | Irish | Quebec | No Occupation Listed | 136 |
| 6 | odonnell | mary | F | 34 | Roman Catholic | Irish | Quebec | No Occupation Listed | 252 |
| 5 | odonnell | patrick | M | 33 | Roman Catholic | Irish | Quebec | Labourers nfs | 252 |
| 14 | odonnell | rosanna | F | 9 | Roman Catholic | Irish | Quebec | No Occupation Listed | 136 |
| 13 | oulle | anne | F | 11 | Roman Catholic | French | Quebec | No Occupation Listed | 59 |
| 11 | oulle | elinore | F | 14 | Roman Catholic | French | Quebec | No Occupation Listed | 59 |
| 10 | oulle | elisa | F | 17 | Roman Catholic | French | Quebec | No Occupation Listed | 59 |
| 15 | oulle | james | M | 4 | Roman Catholic | French | Quebec | No Occupation Listed | 59 |
| 7 | oulle | john | M | 56 | Roman Catholic | French | Quebec | Farmers, general and nfs | 59 |
| 9 | oulle | marsella | F | 19 | Roman Catholic | French | Quebec | No Occupation Listed | 59 |
| 8 | oulle | mary | F | 46 | Roman Catholic | Irish | Ontario | No Occupation Listed | 59 |
| 14 | oulle | matilda | F | 9 | Roman Catholic | French | Quebec | No Occupation Listed | 59 |
| 12 | oulle | thomas | M | 12 | Roman Catholic | French | Quebec | No Occupation Listed | 59 |
| 24 | oullet | alfred | M | 11 | Roman Catholic | French | Quebec | No Occupation Listed | 191 |
| 22 | oullet | aliesaw | F | 17 | Roman Catholic | French | Quebec | No Occupation Listed | 191 |
| 21 | oullet | josaphine | F | 41 | Roman Catholic | French | Quebec | Teachers (unspecified) | 191 |
| 23 | oullet | sinai | M | 16 | Roman Catholic | French | Quebec | Clerk, nfs | 191 |