Residents of Charlottenburg — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 14 | oconnor | anne | F | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 6 |
| 10 | oconnor | catherine | F | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 6 | oconnor | charles | M | 55 | Roman Catholic | Irish | United States | Labourers nfs | 6 |
| 11 | oconnor | charles | M | 20 | Roman Catholic | Irish | Ontario | Labourers nfs | 6 |
| 12 | oconnor | donald | M | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 6 |
| 8 | oconnor | duncan | M | 26 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 9 |
| 10 | oconnor | elen | F | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 6 |
| 7 | oconnor | elisebeth | F | 54 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 6 |
| 9 | oconnor | gilbert | M | 25 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 9 |
| 9 | oconnor | hugh | M | 23 | Roman Catholic | Irish | Ontario | Labourers nfs | 6 |
| 15 | oconnor | joseph | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 6 |
| 11 | oconnor | margret | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 13 | oconnor | mary | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 6 |
| 20 | oconnor | mary | F | 54 | Roman Catholic | Irish | United States | No Occupation Listed | 7 |
| 8 | oconnor | pateric | M | 26 | Roman Catholic | Irish | Ontario | Labourers nfs | 6 |
| 7 | oconnor | patrick | M | 27 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 9 |
| 12 | oconnor | rose | F | 21 | Roman Catholic | Irish | Ontario | No Occupation Listed | 9 |
| 5 | oconor | donald | M | 30 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 9 |
| 6 | oconor | john | M | 29 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 9 |
| 4 | oconor | mary | F | 67 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 9 |
| 23 | odonohue | patrick | M | 28 | Roman Catholic | Scottish | Ontario | Teachers (unspecified) | 58 |
| 15 | oneil | jennet | F | 25 | Roman Catholic | French | Ontario | No Occupation Listed | 238 |
| 14 | oneil | john | M | 24 | Roman Catholic | Irish | Ontario | Labourers nfs | 238 |
| 16 | oneil | john | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 238 |
| 17 | oneil | mary | F | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 238 |
| 12 | oneol | mary | F | 33 | Roman Catholic | Irish | Ontario | No Occupation Listed | 257 |
| 11 | oneol | patrick | M | 67 | Roman Catholic | Irish | Ireland | Tailors and tailoresses | 257 |
| 13 | oshea | anastia | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 27 |
| 12 | oshea | ann | F | 37 | Roman Catholic | Irish | Ireland | No Occupation Listed | 27 |
| 16 | oshea | cathern | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 27 |
| 17 | oshea | ellen | F | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 27 |
| 15 | oshea | esebella | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 27 |
| 19 | oshea | james | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 27 |
| 23 | oshea | joseph | M | 38 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 21 |
| 24 | oshea | mary | F | 25 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 21 |
| 14 | oshea | pateric | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 27 |
| 11 | oshea | thommas | M | 55 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 27 |
| 18 | oshea | thommas | M | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 27 |
| 13 | oshore | lille | F | 1 | Roman Catholic | French | Ontario | No Occupation Listed | 137 |
| 11 | oshore | mary | F | 25 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 137 |
| 10 | oshore | sameal | M | 25 | Roman Catholic | French | United States | No Occupation Listed | 137 |
| 12 | oshore | sarah | F | 4 | Roman Catholic | French | Ontario | No Occupation Listed | 137 |
| 22 | ostrom | ernest | M | 0 | Presbyterian | German | Ontario | No Occupation Listed | 191 |
| 20 | ostrom | isac | M | 35 | Presbyterian | German | Ontario | Watch and Clock Makers | 191 |
| 21 | ostrom | margret | F | 29 | Presbyterian | Scottish | Ontario | No Occupation Listed | 191 |
| 15 | oxley | cathren | F | 23 | Presbyterian | Scottish | Quebec | No Occupation Listed | 219 |
| 12 | oxley | cathrin | F | 58 | Presbyterian | Scottish | Quebec | No Occupation Listed | 219 |
| 11 | oxley | john | M | 59 | Presbyterian | Scottish | Quebec | Farmers, general and nfs | 219 |
| 14 | oxley | malcom | M | 29 | Presbyterian | Scottish | Quebec | No Occupation Listed | 219 |
| 13 | oxley | norman | M | 25 | Presbyterian | Scottish | Quebec | Farmers, general and nfs | 219 |
| 16 | oxley | sarah | F | 21 | Presbyterian | Scottish | Quebec | No Occupation Listed | 219 |