Residents of Dufferin S — Sub-district H, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 9 | ockely | william | M | 46 | Anglican | English | Ontario | Farmers, general and nfs | 89 |
| 15 | ogilvie | arthur | M | 38 | Wesleyan Methodist | Scottish | Nova Scotia | Farmers, general and nfs | 57 |
| 16 | ogilvie | elecius | F | 30 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 57 |
| 18 | ogilvie | ethel | F | 3 | | English | Ontario | No Occupation Listed | 57 |
| 17 | ogilvie | robert | M | 7 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 57 |
| 22 | oilson | ellis | M | 49 | Lutheran | Norwegian | Norway | Farmers, general and nfs | 229 |
| 23 | oilson | mary | F | 42 | Lutheran | Norwegian | Norway | No Occupation Listed | 229 |
| 25 | olvert | cotrina | F | 45 | Mennonite | German | Russia | No Occupation Listed | 401 |
| 3 | olvert | cotrina | F | 19 | Mennonite | German | Russia | No Occupation Listed | 401 |
| 1 | olvert | helena | F | 29 | Mennonite | German | Russia | No Occupation Listed | 184 |
| 24 | olvert | herman | M | 50 | Mennonite | German | Russia | Farmers, general and nfs | 401 |
| 2 | olvert | jacob | M | 6 | Mennonite | German | Manitoba | No Occupation Listed | 184 |
| 2 | olvert | jacob | M | 10 | Mennonite | German | Russia | No Occupation Listed | 401 |
| 1 | olvert | johann | M | 14 | Mennonite | German | Russia | No Occupation Listed | 401 |
| 25 | olvert | peter | M | 32 | Mennonite | German | Russia | Farmers, general and nfs | 184 |
| 3 | olvert | peter | M | 5 | Mennonite | German | Manitoba | No Occupation Listed | 184 |
| 2 | owens | albert | M | 27 | Anglican | Irish | Ontario | Farmers, general and nfs | 212 |
| 7 | owens | edward | M | 28 | Anglican | Irish | Ontario | Farmers, general and nfs | 162 |
| 3 | owens | elijah | M | 29 | Anglican | Irish | Ontario | Farmers, general and nfs | 212 |
| 14 | owens | elizabeth | F | 32 | Anglican | Irish | Ontario | No Occupation Listed | 203 |
| 17 | owens | eva | F | 1 | | Irish | Manitoba | No Occupation Listed | 203 |
| 9 | owens | fridrick | M | 0 | | Irish | Manitoba | No Occupation Listed | 252 |
| 10 | owens | gedeison | M | 25 | Anglican | Irish | Ontario | Farmers, general and nfs | 252 |
| 8 | owens | hanah | F | 20 | Baptist | Irish | Ontario | No Occupation Listed | 252 |
| 15 | owens | lissie | F | 4 | Anglican | Irish | Ontario | No Occupation Listed | 203 |
| 16 | owens | mary | F | 2 | | Irish | Ontario | No Occupation Listed | 203 |
| 13 | owens | richard | M | 30 | Anglican | Irish | Ontario | Farmers, general and nfs | 203 |
| 7 | owens | robert | M | 33 | Baptist | Irish | Ontario | Farmers, general and nfs | 252 |
| 13 | owens | william | M | 22 | Anglican | Irish | Ontario | Farmers, general and nfs | 276 |