Residents of Brighton — Sub-district C, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 21 | obrine | margaret | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 160 |
| 20 | obrine | mary | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 160 |
| 3 | oconnell | bridget | F | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 240 |
| 4 | oconnell | james | M | 25 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 240 |
| 24 | oconnell | martian | M | 72 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 240 |
| 25 | oconnell | mary | F | 66 | Roman Catholic | Irish | Ireland | No Occupation Listed | 240 |
| 2 | oconnell | mary | F | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 240 |
| 1 | oconnell | william | M | 30 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 240 |
| 5 | oconnor | andrew | M | 63 | Presbyterian | Irish | United States | Farmers, general and nfs | 246 |
| 6 | oconnor | hannah | F | 59 | Presbyterian | German | Quebec | No Occupation Listed | 246 |
| 8 | oconnor | james | M | 24 | Presbyterian | Irish | Quebec | Farmers, general and nfs | 246 |
| 9 | oconnor | jane | F | 24 | Presbyterian | Scottish | Ontario | No Occupation Listed | 246 |
| 7 | oconnor | sarah | F | 30 | Presbyterian | Irish | Quebec | No Occupation Listed | 246 |
| 18 | oharra | michael | M | 75 | Roman Catholic | Irish | Ireland | Labourers nfs | 242 |
| 17 | oharra | william | M | 23 | Roman Catholic | Irish | Ontario | Labourers nfs | 242 |
| 23 | ohegan | john | M | 44 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 88 |
| 4 | olaver | andrew | M | 3 | Episcopal Methodist | French | Ontario | No Occupation Listed | 143 |
| 3 | olaver | bertha | F | 28 | Episcopal Methodist | French | Ontario | No Occupation Listed | 143 |
| 2 | olaver | james | M | 33 | Episcopal Methodist | French | Ontario | Farmers, general and nfs | 143 |
| 24 | oliver | andrew | M | 62 | Episcopal Methodist | German | Ontario | Farmers, general and nfs | 142 |
| 1 | oliver | charity | F | 30 | Episcopal Methodist | French | Ontario | No Occupation Listed | 142 |
| 25 | oliver | electa | F | 54 | Episcopal Methodist | French | Ontario | No Occupation Listed | 142 |
| 19 | oliver | josephine | F | 22 | Episcopal Methodist | Blank | Ontario | No Occupation Listed | 116 |
| 18 | oliver | peter | M | 26 | Episcopal Methodist | German | Ontario | No Occupation Listed | 116 |
| 6 | orser | david | M | 83 | Episcopal Methodist | German | Ontario | Farmers, general and nfs | 200 |
| 1 | orser | david | M | 26 | Episcopal Methodist | German | Ontario | Farmers, general and nfs | 227 |
| 7 | orser | elezibeth | F | 66 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 200 |
| 15 | orser | lucy | F | 45 | Methodist | German | Ontario | No Occupation Listed | 202 |
| 16 | orser | minie | F | 13 | Methodist | German | Ontario | No Occupation Listed | 202 |
| 2 | orser | nettie | F | 23 | Episcopal Methodist | English | Ontario | No Occupation Listed | 227 |
| 14 | orser | philander | F | 57 | Episcopal Methodist | German | Ontario | Farmers, general and nfs | 202 |
| 9 | ostram | brock | M | 14 | Methodist | German | Ontario | No Occupation Listed | 234 |
| 17 | owen | annie | F | 23 | Methodist | Irish | Ontario | No Occupation Listed | 160 |
| 19 | owen | james | M | 19 | Methodist | Irish | Ontario | No Occupation Listed | 160 |
| 16 | owen | joseph | M | 31 | Methodist | Irish | Ontario | Farmers, general and nfs | 160 |
| 18 | owen | margaret | F | 70 | Methodist | Irish | Ireland | No Occupation Listed | 160 |
| 5 | owen | martha | F | 21 | Methodist | Irish | Ontario | No Occupation Listed | 137 |
| 7 | owen | mary | F | 72 | Methodist | Blank | Ontario | No Occupation Listed | 152 |
| 18 | owens | henry | M | 62 | Anglican | Irish | Ireland | Policemen and detectives, employer unknown | 148 |
| 19 | owens | sarah | F | 54 | Methodist | German | Ontario | No Occupation Listed | 148 |