Residents of Ashfield — Sub-district F, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 15 | oconner | mathew | M | 30 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 247 |
| 5 | oconnor | catherine | F | 26 | Roman Catholic | Irish | Ontario | No Occupation Listed | 47 |
| 13 | oconnor | charles | M | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 400 |
| 25 | oconnor | edward | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 12 | oconnor | edward | M | 32 | Roman Catholic | Irish | Ontario | Carpenters | 400 |
| 24 | oconnor | ellen | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 5 |
| 2 | oconnor | ellen | F | 60 | Roman Catholic | Irish | Ontario | No Occupation Listed | 46 |
| 2 | oconnor | hannah | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 5 |
| 1 | oconnor | james | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 18 | oconnor | jeremiah | M | 43 | Roman Catholic | Irish | United States | Farmers, general and nfs | 45 |
| 23 | oconnor | jeremiah | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 3 | oconnor | johannah | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 46 |
| 21 | oconnor | john | M | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 6 | oconnor | john | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 47 |
| 23 | oconnor | joseph | M | 22 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 5 |
| 14 | oconnor | joseph | M | 27 | Roman Catholic | Irish | Ontario | Carpenters | 400 |
| 22 | oconnor | mary | F | 46 | Roman Catholic | Irish | Ireland | No Occupation Listed | 5 |
| 25 | oconnor | mary | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 5 |
| 19 | oconnor | mary | F | 40 | Roman Catholic | Irish | United States | No Occupation Listed | 45 |
| 24 | oconnor | mary | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 11 | oconnor | mary | F | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 400 |
| 15 | oconnor | mary | F | 25 | Roman Catholic | Irish | Ontario | Teachers (unspecified) | 400 |
| 21 | oconnor | patrick | M | 45 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 5 |
| 20 | oconnor | peter | M | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 22 | oconnor | thomas | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 45 |
| 4 | oconnor | thomas | M | 32 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 47 |
| 1 | oconor | catherine | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 5 |
| 3 | oconor | cecilia | F | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 5 |
| 4 | oconor | john | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 5 |
| 5 | oconor | margret | F | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 5 |
| 13 | ofay | allis | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 251 |
| 10 | ofay | annie | F | 35 | Roman Catholic | Irish | Ireland | No Occupation Listed | 251 |
| 9 | ofay | hugh | M | 39 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 251 |
| 14 | ofay | josephien | F | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 251 |
| 11 | ofay | margaret | F | 11 | Roman Catholic | Irish | United States | No Occupation Listed | 251 |
| 12 | ofay | philip | M | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 251 |
| 15 | ofay | t | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 251 |
| 10 | oneil | abigail | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 19 | oneil | agnes | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 434 |
| 6 | oneil | anne | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 7 | oneil | bridget | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 100 |
| 18 | oneil | bridget | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 434 |
| 4 | oneil | catherine | F | 40 | Roman Catholic | Irish | Ireland | No Occupation Listed | 430 |
| 9 | oneil | catherine | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 16 | oneil | catherine | F | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 434 |
| 10 | oneil | denis | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 100 |
| 14 | oneil | ellen | F | 21 | Roman Catholic | Irish | Ontario | No Occupation Listed | 434 |
| 11 | oneil | james | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 17 | oneil | johannah | F | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 434 |
| 4 | oneil | john | M | 53 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 100 |
| 5 | oneil | john | M | 24 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 100 |
| 8 | oneil | john | M | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 7 | oneil | margaret | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 13 | oneil | margaret | F | 25 | Roman Catholic | Irish | Ontario | No Occupation Listed | 434 |
| 12 | oneil | martha | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 5 | oneil | mary | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 14 | oneil | mary | F | 54 | Roman Catholic | Irish | Ireland | No Occupation Listed | 450 |
| 15 | oneil | michael | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 12 | oneil | morgan | M | 23 | Roman Catholic | Irish | Ontario | No Occupation Listed | 434 |
| 8 | oneil | patrick | M | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 100 |
| 13 | oneil | patrick | M | 56 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 450 |
| 11 | oneil | richard | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 100 |
| 1 | oneil | richard | M | 50 | Roman Catholic | Irish | Ireland | Gardeners nfs | 445 |
| 16 | oneil | sarah | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 9 | oneil | thomas | M | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 100 |
| 3 | oneil | thomas | M | 42 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 430 |
| 13 | oneil | thomas | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 6 | oneil | william | M | 20 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 100 |
| 14 | oneil | william | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 430 |
| 11 | oneil | william | M | 62 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 434 |
| 15 | oneil | william | M | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 434 |
| 3 | orieil | richard | M | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 2 |
| 16 | oriely | agnes | F | 7 | Roman Catholic | Irish | Ireland | No Occupation Listed | 171 |
| 16 | oriely | agness | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 165 |
| 15 | oriely | anne | F | 10 | Roman Catholic | Irish | Ireland | No Occupation Listed | 171 |
| 12 | oriely | annie | F | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 167 |
| 11 | oriely | bridget | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 167 |
| 12 | oriely | catherine | F | 35 | Roman Catholic | Irish | Ireland | No Occupation Listed | 171 |
| 14 | oriely | catherine | F | 14 | Roman Catholic | Irish | Ireland | No Occupation Listed | 171 |
| 9 | oriely | cornelius | M | 18 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 167 |
| 15 | oriely | ellen | F | 21 | Roman Catholic | Irish | Ontario | No Occupation Listed | 165 |
| 7 | oriely | hanora | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 167 |
| 13 | oriely | hanorah | F | 26 | Roman Catholic | Irish | Ontario | No Occupation Listed | 165 |
| 18 | oriely | john | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 165 |
| 10 | oriely | john | M | 17 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 167 |
| 11 | oriely | john | M | 45 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 171 |
| 13 | oriely | john | M | 16 | Roman Catholic | Irish | Ireland | Ambiguous responses | 171 |
| 11 | oriely | julia | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 165 |
| 20 | oriely | julia | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 165 |
| 17 | oriely | lucia | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 165 |
| 12 | oriely | mary | F | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 165 |
| 10 | oriely | michael | M | 70 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 165 |
| 8 | oriely | michael | M | 26 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 167 |
| 14 | oriely | patrick | M | 24 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 165 |
| 21 | oriely | patrick | M | 80 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 165 |
| 19 | oriely | roselia | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 165 |
| 6 | oriely | thomas | M | 55 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 167 |
| 1 | orr | james | M | 24 | Presbyterian | Irish | Ontario | Teachers (unspecified) | 252 |
| 2 | orr | rosanna | F | 20 | Presbyterian | Irish | Ontario | No Occupation Listed | 252 |
| 3 | otway | henery | M | 52 | Anglican | English | France | Dealer, merchant etc. (Wholesale & retail trade) | 42 |
| 4 | otway | margaret | F | 35 | Anglican | Irish | Ireland | No Occupation Listed | 42 |