Residents of Haldimand — Sub-district B, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 2 | obren | michail | M | 29 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 30 |
| 21 | obrien | dennis | M | 24 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 14 |
| 4 | obrien | ellen | F | 25 | Roman Catholic | Irish | Ontario | No Occupation Listed | 58 |
| 18 | obrien | francis | M | 33 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 14 |
| 3 | obrien | honour | F | 46 | Roman Catholic | Irish | Ireland | No Occupation Listed | 58 |
| 17 | obrien | james | M | 35 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 14 |
| 2 | obrien | jeremiah | M | 80 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 58 |
| 1 | obrien | margaret | F | 55 | Roman Catholic | Scottish | Scotland | No Occupation Listed | 54 |
| 20 | obrien | mary | F | 26 | Roman Catholic | Irish | Ontario | No Occupation Listed | 14 |
| 24 | obrien | mary | F | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 14 |
| 19 | obrien | philip | M | 30 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 14 |
| 22 | obrien | rosey | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 14 |
| 23 | obrien | thomas | M | 21 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 14 |
| 25 | obrien | timothy | M | 50 | Roman Catholic | Irish | Ireland | river drivers | 54 |
| 5 | obrien | william | M | 23 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 58 |
| 6 | oconnor | charles | M | 36 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 23 |
| 10 | oconnor | daniel | M | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 23 |
| 7 | oconnor | elizabeth | F | 25 | | Blank | Ireland | No Occupation Listed | 23 |
| 11 | oconnor | james | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 23 |
| 8 | oconnor | mary | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 23 |
| 9 | oconnor | william | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 23 |
| 4 | ofinirlin | annie | F | 57 | Anglican | Irish | Ireland | No Occupation Listed | 122 |
| 8 | ofinirlin | annie | F | 6 | Anglican | Irish | Ontario | No Occupation Listed | 122 |
| 6 | ofinirlin | elizabeth | F | 23 | Anglican | Irish | Ontario | No Occupation Listed | 122 |
| 3 | ofinirlin | john | M | 62 | Anglican | Irish | Ireland | Farmers, general and nfs | 122 |
| 7 | ofinirlin | john | M | 19 | Anglican | Irish | Ontario | No Occupation Listed | 122 |
| 5 | ofinirlin | william | M | 21 | Anglican | Irish | Ontario | Farmers, general and nfs | 122 |
| 8 | ohara | carrie | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 161 |
| 7 | ohara | charlotte | F | 32 | Roman Catholic | Irish | Ontario | No Occupation Listed | 161 |
| 9 | ohara | henry | M | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 161 |
| 11 | ohara | lucinda | F | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 161 |
| 6 | ohara | patrick | M | 34 | Roman Catholic | Irish | Ireland | river drivers | 161 |
| 10 | ohara | richard | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 161 |
| 21 | olezard | ammarilla | F | 12 | Methodist | English | Ontario | No Occupation Listed | 131 |
| 20 | olezard | james | M | 14 | Methodist | English | Ontario | No Occupation Listed | 131 |
| 15 | olezard | john | M | 56 | Methodist | English | England | Farmers, general and nfs | 131 |
| 16 | olezard | maria | F | 44 | Methodist | Scottish | Ontario | No Occupation Listed | 131 |
| 19 | olezard | nellie | F | 16 | Methodist | English | Ontario | No Occupation Listed | 131 |
| 18 | olezard | thomas | M | 19 | Methodist | English | Ontario | Farmers, general and nfs | 131 |
| 17 | olezard | william | M | 21 | Methodist | English | Ontario | Farmers, general and nfs | 131 |
| 5 | orielly | christopher | M | 55 | Roman Catholic | Irish | Ireland | lawyer | 1 |
| 15 | ormiston | andrew | M | 14 | Presbyterian | Scottish | Ontario | No Occupation Listed | 180 |
| 16 | ormiston | catharine | F | 6 | Presbyterian | Scottish | Ontario | No Occupation Listed | 107 |
| 13 | ormiston | george | M | 19 | Presbyterian | Scottish | Ontario | Farmers, general and nfs | 180 |
| 14 | ormiston | james | M | 31 | Presbyterian | Scottish | Scotland | Farmers, general and nfs | 107 |
| 12 | ormiston | john | M | 22 | Presbyterian | Scottish | Ontario | Farmers, general and nfs | 180 |
| 14 | ormiston | margaret | F | 16 | Presbyterian | Scottish | Ontario | No Occupation Listed | 180 |
| 11 | ormiston | margory | F | 53 | Presbyterian | Scottish | Scotland | No Occupation Listed | 180 |
| 15 | ormiston | mary | F | 31 | Presbyterian | Irish | Ontario | No Occupation Listed | 107 |
| 10 | ormiston | peter | M | 60 | Presbyterian | Scottish | Scotland | Farmers, general and nfs | 180 |
| 17 | ormiston | robert | M | 4 | Presbyterian | Scottish | Ontario | No Occupation Listed | 107 |
| 22 | orson | annie | F | 26 | Methodist | English | Ontario | No Occupation Listed | 131 |
| 23 | orson | john | M | 5 | Methodist | English | Ontario | No Occupation Listed | 131 |
| 24 | orson | josephine | F | 3 | Methodist | English | Ontario | No Occupation Listed | 131 |
| 25 | orson | thomas | M | 0 | Methodist | English | Ontario | No Occupation Listed | 131 |
| 21 | ostrom | frances | F | 23 | Methodist | English | Ontario | No Occupation Listed | 158 |
| 6 | ostrom | mapie | F | 15 | Wesleyan Methodist | German | Ontario | Servants nfs | 11 |
| 20 | ostrom | simon | M | 22 | Methodist | Scottish | Ontario | Farmers, general and nfs | 158 |
| 22 | ostrom | syntha | F | 0 | Methodist | Blank | Ontario | No Occupation Listed | 158 |
| 16 | ough | joseph | M | 72 | Anglican | English | England | Labourers nfs | 178 |
| 22 | owens | ann | F | 45 | Roman Catholic | Irish | Ireland | No Occupation Listed | 5 |
| 23 | owens | elanor | F | 6 | Anglican | Irish | Ontario | No Occupation Listed | 288 |
| 21 | owens | george | M | 10 | Anglican | Irish | Ontario | No Occupation Listed | 288 |
| 21 | owens | henry | M | 47 | Methodist | German | Ontario | Labourers nfs | 5 |
| 23 | owens | john | M | 55 | Methodist | Irish | Ontario | Labourers nfs | 10 |
| 19 | owens | margaret | F | 35 | Anglican | English | Ontario | No Occupation Listed | 288 |
| 25 | owens | margaret | F | 0 | Anglican | Irish | Ontario | No Occupation Listed | 288 |
| 22 | owens | mary | F | 8 | Anglican | Irish | Ontario | No Occupation Listed | 288 |
| 24 | owens | sarah | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 5 |
| 18 | owens | thomas | M | 36 | Anglican | Irish | Ireland | Foremen and supervisors, railways | 288 |
| 24 | owens | thomas | M | 3 | Anglican | Irish | Ontario | No Occupation Listed | 288 |
| 23 | owens | william | M | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 5 |
| 20 | owens | william | M | 10 | Anglican | Irish | Ontario | No Occupation Listed | 288 |