Residents of Bentinck — Sub-district B, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 18 | obrien | cathrine | F | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 14 | obrien | dennis | M | 22 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 28 |
| 20 | obrien | edward | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 13 | obrien | ellen | F | 41 | Roman Catholic | Irish | Ireland | No Occupation Listed | 28 |
| 12 | obrien | jermiah | M | 50 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 28 |
| 17 | obrien | julia | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 16 | obrien | mary | F | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 21 | obrien | michael | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 15 | obrien | patrick | M | 21 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 28 |
| 22 | obrien | thomas | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 19 | obrien | timothy | M | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 21 | oneill | agnes | F | 14 | Baptist | Irish | Ontario | No Occupation Listed | 11 |
| 17 | oneill | alice | F | 4 | Baptist | Irish | Ontario | No Occupation Listed | 36 |
| 13 | oneill | catherine | F | 16 | Baptist | Irish | Ontario | No Occupation Listed | 36 |
| 13 | oneill | elizabeth | F | 23 | Baptist | English | Ontario | No Occupation Listed | 9 |
| 16 | oneill | ezra | M | 6 | Baptist | Irish | Ontario | No Occupation Listed | 36 |
| 14 | oneill | huldah | F | 13 | Baptist | Irish | Ontario | No Occupation Listed | 36 |
| 14 | oneill | james | M | 0 | Baptist | English | Ontario | No Occupation Listed | 9 |
| 20 | oneill | jemina | F | 17 | Baptist | Irish | Ontario | No Occupation Listed | 11 |
| 1 | oneill | jennet | F | 0 | Baptist | Irish | Ontario | No Occupation Listed | 11 |
| 23 | oneill | john | M | 9 | Baptist | Irish | Ontario | No Occupation Listed | 11 |
| 12 | oneill | john | M | 17 | Baptist | Irish | Ontario | Farmers, general and nfs | 36 |
| 12 | oneill | jonathan | M | 24 | Baptist | Irish | Ontario | Farmers, general and nfs | 9 |
| 19 | oneill | martha | F | 45 | Baptist | English | Ontario | No Occupation Listed | 11 |
| 18 | oneill | patrick | M | 49 | Baptist | Irish | Ireland | Farmers, general and nfs | 11 |
| 11 | oneill | sarah | F | 42 | Baptist | English | Ontario | Farmers, general and nfs | 36 |
| 24 | oneill | thomas | M | 9 | Baptist | Irish | Ontario | No Occupation Listed | 11 |
| 15 | oneill | thomas | M | 11 | Baptist | Irish | Ontario | No Occupation Listed | 36 |
| 25 | oneill | tilman | M | 4 | Baptist | Irish | Ontario | No Occupation Listed | 11 |
| 22 | oneill | viola | F | 11 | Baptist | Irish | Ontario | No Occupation Listed | 11 |
| 18 | oppensacker | daniel | M | 20 | Evangelical | German | Ontario | Tailors and tailoresses | 363 |
| 12 | oppensacker | henry | M | 71 | Evangelical | German | Germany | Labourers nfs | 363 |
| 14 | oppensacker | henry | M | 29 | Evangelical | German | Ontario | river drivers | 363 |
| 21 | oppensacker | katie | F | 14 | Evangelical | German | Ontario | No Occupation Listed | 363 |
| 13 | oppensacker | margret | F | 58 | Evangelical | German | Germany | No Occupation Listed | 363 |
| 15 | oppensacker | margret | F | 26 | Evangelical | German | Ontario | Servants nfs | 363 |
| 16 | oppensacker | mary | F | 24 | Evangelical | German | Ontario | Servants nfs | 363 |
| 20 | oppensacker | philip | M | 16 | Evangelical | German | Ontario | Labourers nfs | 363 |
| 22 | oppensacker | sarah | F | 11 | Evangelical | German | Ontario | No Occupation Listed | 363 |
| 17 | oppensacker | sophia | F | 22 | Evangelical | German | Ontario | Servants nfs | 363 |
| 19 | oppensacker | valentine | M | 18 | Evangelical | German | Ontario | Tanners nfs | 363 |
| 17 | opportshawser | catharine | F | 41 | Baptist | German | Germany | No Occupation Listed | 75 |
| 16 | opportshawser | conrod | M | 44 | Baptist | German | Germany | Farmers, general and nfs | 75 |
| 25 | opportshawser | edward | M | 1 | Baptist | German | Ontario | No Occupation Listed | 75 |
| 19 | opportshawser | elizabeth | F | 17 | Baptist | German | Ontario | No Occupation Listed | 75 |
| 21 | opportshawser | george | M | 12 | Baptist | German | Ontario | No Occupation Listed | 75 |
| 24 | opportshawser | lydia | F | 6 | Baptist | German | Ontario | No Occupation Listed | 75 |
| 22 | opportshawser | madeline | F | 10 | Baptist | German | Ontario | No Occupation Listed | 75 |
| 20 | opportshawser | margret | F | 14 | Baptist | German | Ontario | No Occupation Listed | 75 |
| 18 | opportshawser | mary | F | 19 | Baptist | German | Ontario | No Occupation Listed | 75 |
| 23 | opportshawser | noah | M | 8 | Baptist | German | Ontario | No Occupation Listed | 75 |
| 14 | orr | elizabith | F | 58 | Presbyterian | Irish | Ireland | No Occupation Listed | 65 |
| 15 | orr | ellen | F | 23 | Presbyterian | Irish | Ontario | No Occupation Listed | 65 |
| 16 | orr | nancy | F | 20 | Presbyterian | Irish | Ontario | No Occupation Listed | 65 |
| 13 | orr | samuel | M | 55 | Presbyterian | Irish | Ireland | Farmers, general and nfs | 65 |
| 17 | orr | samuel | M | 22 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 65 |
| 18 | orr | william | M | 19 | Presbyterian | Irish | Ontario | No Occupation Listed | 65 |
| 11 | overfield | david | M | 4 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 13 |
| 9 | overfield | samuel | M | 46 | Wesleyan Methodist | English | England | Blacksmiths | 13 |
| 10 | overfield | sarah | F | 30 | Baptist | English | England | No Occupation Listed | 13 |
| 12 | overfield | sarah | F | 2 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 13 |
| 2 | owens | eliza | F | 22 | Presbyterian | Irish | Ontario | No Occupation Listed | 282 |
| 5 | owens | ellen | F | 36 | Presbyterian | Scottish | Scotland | No Occupation Listed | 67 |
| 5 | owens | ellen | F | 15 | Presbyterian | Irish | Ontario | No Occupation Listed | 282 |
| 4 | owens | joseph | M | 17 | Presbyterian | Irish | Ontario | No Occupation Listed | 282 |
| 1 | owens | margret | F | 43 | Presbyterian | Irish | Ontario | No Occupation Listed | 282 |
| 6 | owens | robert | M | 13 | Presbyterian | Irish | Ontario | No Occupation Listed | 282 |
| 4 | owens | samuel | M | 31 | Presbyterian | Irish | Ontario | No Occupation Listed | 67 |
| 25 | owens | samuel | M | 53 | Presbyterian | Irish | Ireland | Farmers, general and nfs | 282 |
| 6 | owens | william | M | 3 | Presbyterian | Irish | Ontario | No Occupation Listed | 67 |
| 3 | owens | william | M | 20 | Presbyterian | Irish | Ontario | No Occupation Listed | 282 |