Residents of Erin — Sub-district E, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 16 | oalman | jane | F | 25 | Presbyterian | Irish | Ontario | No Occupation Listed | 169 |
| 14 | oalman | john | M | 21 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 169 |
| 13 | oalman | mary | F | 65 | Presbyterian | Irish | Ireland | No Occupation Listed | 169 |
| 15 | oalman | mary | F | 25 | Presbyterian | Irish | Ontario | No Occupation Listed | 169 |
| 12 | oalman | will | M | 68 | Presbyterian | Irish | Ireland | Weavers | 169 |
| 12 | odonnell | catherine | F | 26 | Roman Catholic | Irish | Ontario | No Occupation Listed | 80 |
| 11 | odonnell | james | M | 36 | Roman Catholic | Irish | Ontario | Hotel Keepers and Managers | 80 |
| 13 | odonnell | mary | F | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 80 |
| 14 | odonnell | sarah | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 80 |
| 11 | oharcow | bridget | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 62 |
| 9 | oharcow | joseph | M | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 62 |
| 10 | oharcow | micheal | M | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 62 |
| 8 | oharcow | patric | M | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 62 |
| 12 | oharcow | peter | M | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 62 |
| 7 | oharcow | thomas | M | 58 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 62 |
| 9 | oliver | catherine | F | 65 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 261 |
| 6 | oliver | elisabeth | F | 51 | Baptist | German | Ontario | No Occupation Listed | 290 |
| 18 | orilley | albert | M | 43 | Episcopal Methodist | Irish | Ontario | river drivers | 260 |
| 7 | orilley | ann | F | 6 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 15 |
| 2 | orilley | elizabeth | F | 32 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 15 |
| 6 | orilley | george | M | 7 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 15 |
| 22 | orilley | george | M | 11 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 260 |
| 1 | orilley | ham | M | 34 | Wesleyan Methodist | Irish | Ontario | river drivers | 15 |
| 4 | orilley | margret | F | 11 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 15 |
| 23 | orilley | mariah | F | 6 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 260 |
| 9 | orilley | martha | F | 2 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 15 |
| 25 | orilley | martha | F | 2 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 260 |
| 20 | orilley | mary | F | 15 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 260 |
| 19 | orilley | matilda | F | 34 | Episcopal Methodist | Scottish | Ontario | No Occupation Listed | 260 |
| 3 | orilley | may | F | 12 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 15 |
| 1 | orilley | pat | M | 74 | Disciple of Christ | Irish | Ontario | No Occupation Listed | 261 |
| 21 | orilley | patrick | M | 12 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 260 |
| 8 | orilley | sarah | F | 4 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 15 |
| 24 | orilley | sarah | F | 4 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 260 |
| 5 | orilley | william | M | 9 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 15 |
| 12 | orr | alexander | M | 20 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 14 | orr | annie | F | 16 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 9 | orr | catherine | F | 48 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 17 | orr | catherine | F | 6 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 16 | orr | eliza | F | 12 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 15 | orr | francis | M | 14 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 8 | orr | frasier | M | 63 | Wesleyan Methodist | Irish | Ireland | Farmers, general and nfs | 209 |
| 13 | orr | isabella | F | 18 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 10 | orr | john | M | 26 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 11 | orr | mary | F | 22 | Wesleyan Methodist | Irish | Ontario | No Occupation Listed | 209 |
| 19 | overland | charles | M | 61 | Baptist | English | England | Carpenters | 172 |
| 10 | overland | charles | M | 35 | Presbyterian | English | England | Dealer, merchant etc. (Wholesale & retail trade) | 180 |
| 13 | overland | george | M | 32 | Methodist | English | England | Labourers nfs | 180 |
| 11 | overland | margret | F | 22 | Baptist | English | Ontario | No Occupation Listed | 180 |
| 20 | overland | mary | F | 60 | Baptist | English | England | No Occupation Listed | 172 |
| 22 | overland | mary | F | 20 | Baptist | English | Ontario | No Occupation Listed | 172 |
| 21 | overland | mathama | M | 26 | Baptist | English | Ontario | No Occupation Listed | 172 |
| 12 | overland | robert | M | 6 | Presbyterian | English | Ontario | No Occupation Listed | 180 |
| 6 | overlang | john | M | 66 | Anglican | English | England | Tailors and tailoresses | 247 |