Residents of Ross — Sub-district H, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 1 | oats | elizabeth | F | 17 | Anglican | Irish | Ontario | No Occupation Listed | 14 |
| 22 | oats | mary | F | 44 | Anglican | Irish | Ontario | No Occupation Listed | 14 |
| 21 | oats | richard | M | 44 | Anglican | Irish | Ireland | Farmers, general and nfs | 14 |
| 25 | oats | thomas | M | 23 | Anglican | Irish | Ontario | Farmers, general and nfs | 14 |
| 23 | oats | william | M | 10 | Anglican | Irish | Ontario | No Occupation Listed | 14 |
| 19 | obrien | alice | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 42 |
| 18 | obrien | elizabeth | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 42 |
| 16 | obrien | emelia | F | 50 | Roman Catholic | Irish | Ontario | No Occupation Listed | 42 |
| 15 | obrien | john | M | 67 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 42 |
| 20 | obrien | john | M | 16 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 42 |
| 17 | obrien | thomas | M | 24 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 42 |
| 13 | ohara | cathrine | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 12 | ohara | eliza | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 8 | ohara | ellen | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 11 | ohara | john | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 6 | ohara | machael | M | 22 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 22 |
| 5 | ohara | marria | F | 42 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 14 | ohara | marria | F | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 7 | ohara | mary | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 17 | ohara | patrick | M | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 16 | ohara | peter | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 4 | ohara | thomas | M | 52 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 22 |
| 9 | ohara | thomas | M | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 15 | ohara | valentine | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 10 | ohara | william | M | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 22 |
| 23 | olmstead | alice | F | 11 | Episcopal Methodist | English | Ontario | No Occupation Listed | 87 |
| 17 | olmstead | almira | F | 44 | Episcopal Methodist | English | Ontario | No Occupation Listed | 87 |
| 18 | olmstead | arthur | M | 23 | Episcopal Methodist | English | Ontario | Farmers, general and nfs | 87 |
| 20 | olmstead | christopher | M | 19 | Episcopal Methodist | English | Ontario | Farmers, general and nfs | 87 |
| 21 | olmstead | emline | F | 16 | Episcopal Methodist | English | Ontario | No Occupation Listed | 87 |
| 19 | olmstead | frederick | M | 21 | Episcopal Methodist | English | Ontario | Farmers, general and nfs | 87 |
| 1 | olmstead | hellen | F | 4 | Episcopal Methodist | English | Ontario | No Occupation Listed | 87 |
| 2 | olmstead | horis | M | 1 | Episcopal Methodist | English | Ontario | No Occupation Listed | 87 |
| 22 | olmstead | ida | F | 14 | Episcopal Methodist | English | Ontario | No Occupation Listed | 87 |
| 24 | olmstead | john | M | 9 | Episcopal Methodist | English | Ontario | No Occupation Listed | 87 |
| 25 | olmstead | louis | M | 6 | Episcopal Methodist | English | Ontario | No Occupation Listed | 87 |
| 16 | olmstead | wiman | M | 48 | Episcopal Methodist | English | Quebec | Farmers, general and nfs | 87 |
| 2 | olmsted | albert | M | 40 | Episcopal Methodist | Canadian | Ontario | Farmers, general and nfs | 51 |
| 7 | olmsted | albert | M | 12 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 51 |
| 9 | olmsted | elizth | F | 6 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 51 |
| 6 | olmsted | ephram | M | 14 | Episcopal Methodist | Irish | Ontario | Farmers, general and nfs | 51 |
| 11 | olmsted | margt | F | 3 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 51 |
| 11 | olmsted | matilda | F | 25 | Episcopal Methodist | Scottish | Ontario | No Occupation Listed | 80 |
| 10 | olmsted | nethaniel | M | 54 | Episcopal Methodist | Scottish | Ontario | Farmers, general and nfs | 80 |
| 10 | olmsted | samuel | M | 5 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 51 |
| 3 | olmsted | sarah | F | 42 | Episcopal Methodist | Irish | Ireland | No Occupation Listed | 51 |
| 5 | olmsted | sarah | F | 16 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 51 |
| 8 | olmsted | thomas | M | 10 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 51 |
| 12 | olmsted | wallace | M | 1 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 51 |
| 4 | olmsted | william | M | 18 | Episcopal Methodist | Irish | Ontario | Farmers, general and nfs | 51 |
| 14 | overman | charles | M | 55 | Anglican | English | England | No Occupation Listed | 128 |