Residents of Masham — Sub-district GG, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 12 | obre | ann | F | 48 | Presbyterian | Irish | Ontario | No Occupation Listed | 31 |
| 13 | obre | charles | M | 22 | Presbyterian | Irish | Ontario | Carpenters | 31 |
| 11 | obre | edward | M | 58 | Presbyterian | Irish | Ireland | Farmers, general and nfs | 31 |
| 14 | obre | elizabeth | F | 20 | Presbyterian | Irish | Quebec | No Occupation Listed | 31 |
| 18 | obre | fannie | F | 13 | Presbyterian | Irish | Quebec | No Occupation Listed | 31 |
| 16 | obre | francis | M | 17 | Presbyterian | Irish | Quebec | Carpenters | 31 |
| 22 | obre | harriet | F | 3 | Presbyterian | Irish | Quebec | No Occupation Listed | 31 |
| 19 | obre | isabella | F | 11 | Presbyterian | Irish | Quebec | No Occupation Listed | 31 |
| 23 | obre | james | M | 0 | Presbyterian | Irish | Quebec | No Occupation Listed | 31 |
| 20 | obre | lucy | F | 10 | Presbyterian | Irish | Quebec | No Occupation Listed | 31 |
| 21 | obre | margeret | F | 6 | Presbyterian | Irish | Quebec | No Occupation Listed | 31 |
| 15 | obre | mary | F | 21 | Presbyterian | Irish | Quebec | No Occupation Listed | 31 |
| 17 | obre | rebecca | F | 15 | Presbyterian | Irish | Quebec | No Occupation Listed | 31 |
| 16 | ohara | ann | F | 34 | Presbyterian | Irish | Ireland | No Occupation Listed | 124 |
| 20 | ohara | charles | M | 4 | Presbyterian | Irish | Quebec | No Occupation Listed | 2 |
| 15 | ohara | eliza | F | 9 | Wesleyan Methodist | Irish | Quebec | No Occupation Listed | 97 |
| 20 | ohara | eliza | F | 4 | Presbyterian | Irish | Quebec | No Occupation Listed | 124 |
| 11 | ohara | james | M | 40 | Wesleyan Methodist | Irish | Quebec | Farmers, general and nfs | 97 |
| 17 | ohara | jane | F | 11 | Presbyterian | Irish | Quebec | No Occupation Listed | 124 |
| 12 | ohara | jemima | F | 33 | Wesleyan Methodist | Irish | Quebec | No Occupation Listed | 97 |
| 15 | ohara | john | M | 45 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 124 |
| 18 | ohara | john | M | 9 | Presbyterian | Irish | Quebec | No Occupation Listed | 124 |
| 16 | ohara | joseph | M | 7 | Wesleyan Methodist | Irish | Quebec | No Occupation Listed | 97 |
| 17 | ohara | mary | F | 5 | Wesleyan Methodist | Irish | Quebec | No Occupation Listed | 97 |
| 17 | ohara | matilda | F | 30 | Presbyterian | Irish | Quebec | No Occupation Listed | 2 |
| 21 | ohara | peter | M | 2 | Presbyterian | Irish | Quebec | No Occupation Listed | 2 |
| 19 | ohara | robert | M | 0 | Wesleyan Methodist | Irish | Quebec | No Occupation Listed | 97 |
| 16 | ohara | samuel | M | 32 | Presbyterian | Irish | Quebec | Farmers, general and nfs | 2 |
| 14 | ohara | sarah | F | 11 | Wesleyan Methodist | Irish | Quebec | No Occupation Listed | 97 |
| 19 | ohara | thomas | M | 6 | Presbyterian | Irish | Quebec | No Occupation Listed | 2 |
| 18 | ohara | thomas | M | 3 | Wesleyan Methodist | Irish | Quebec | No Occupation Listed | 97 |
| 18 | ohara | william | M | 8 | Presbyterian | Irish | Quebec | No Occupation Listed | 2 |
| 13 | ohara | william | M | 13 | Wesleyan Methodist | Irish | Quebec | No Occupation Listed | 97 |
| 21 | ohara | william | M | 0 | Presbyterian | Irish | Quebec | No Occupation Listed | 124 |
| 19 | oharqa | frances | F | 7 | Presbyterian | Irish | Quebec | No Occupation Listed | 124 |
| 10 | oterson | mery | F | 33 | Anglican | Irish | Quebec | No Occupation Listed | 137 |
| 8 | oterson | samuel | M | 60 | Anglican | Irish | Ireland | Farmers, general and nfs | 137 |
| 11 | oterson | tana | F | 20 | Anglican | Irish | Quebec | No Occupation Listed | 137 |
| 9 | oterson | william | M | 30 | Anglican | Irish | Quebec | Labourers nfs | 137 |
| 2 | otterson | william | M | 30 | Presbyterian | Irish | Quebec | Farmers, general and nfs | 130 |