Residents of McKillop — Sub-district E, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 22 | o'hgara | ellen | F | 18 | Roman Catholic | Blank | Ontario | No Occupation Listed | 136 |
| 19 | oakley | eugenie | F | 30 | Presbyterian | Scottish | Ontario | No Occupation Listed | 291 |
| 18 | oakley | thomas | M | 30 | Presbyterian | English | Ontario | Farmers, general and nfs | 291 |
| 2 | obeirn | anne | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 118 |
| 1 | obeirn | catherine | F | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 118 |
| 3 | obeirn | hanora | F | 66 | Roman Catholic | Irish | Ireland | No Occupation Listed | 118 |
| 25 | obeirn | john | M | 26 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 118 |
| 10 | obrien | daniel | M | 25 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 302 |
| 7 | obrien | fanny | F | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 301 |
| 4 | obrien | john | M | 58 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 301 |
| 5 | obrien | john | M | 21 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 301 |
| 6 | obrien | margaret | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 301 |
| 10 | oconml | margaret | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 321 |
| 8 | oconnl | bernard | M | 41 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 321 |
| 13 | oconnl | james | M | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 321 |
| 11 | oconnl | jane | F | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 321 |
| 12 | oconnl | john | M | 11 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 321 |
| 16 | oconnl | joseph | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 321 |
| 14 | oconnl | kate | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 321 |
| 15 | oconnl | louis | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 321 |
| 9 | oconnl | mary | F | 37 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 321 |
| 17 | oconnl | mary | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 321 |
| 19 | ohara | anny | F | 21 | Roman Catholic | Irish | Ontario | No Occupation Listed | 127 |
| 24 | ohara | anny | F | 13 | Roman Catholic | Blank | Ontario | No Occupation Listed | 136 |
| 21 | ohara | barbara | F | 34 | | Blank | Germany | No Occupation Listed | 136 |
| 21 | ohara | bryan | M | 24 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 215 |
| 22 | ohara | elizabeth | F | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 215 |
| 18 | ohara | ellen | F | 25 | Roman Catholic | Irish | Ontario | No Occupation Listed | 127 |
| 16 | ohara | francis | M | 52 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 127 |
| 21 | ohara | francis | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 127 |
| 17 | ohara | hannah | F | 55 | Roman Catholic | Irish | Ireland | No Occupation Listed | 127 |
| 25 | ohara | jeremiah | M | 13 | Roman Catholic | Blank | Ontario | No Occupation Listed | 136 |
| 1 | ohara | john | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 136 |
| 20 | ohara | kate | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 127 |
| 23 | ohara | mary | F | 16 | Roman Catholic | Blank | Ontario | No Occupation Listed | 136 |
| 20 | ohara | thomas | M | 48 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 136 |
| 21 | okiely | bridget | F | 26 | Roman Catholic | Irish | Ontario | No Occupation Listed | 18 |
| 22 | okiely | catherine | F | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 18 |
| 24 | okiely | joseph | M | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 18 |
| 23 | okiely | mary | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 18 |
| 20 | okiely | owen | M | 60 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 18 |
| 3 | oloughlin | bridget | F | 44 | Roman Catholic | Irish | Ireland | No Occupation Listed | 202 |
| 12 | oloughlin | bridget | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 202 |
| 9 | oloughlin | elizabeth | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 202 |
| 8 | oloughlin | hannah | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 202 |
| 6 | oloughlin | james | M | 25 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 202 |
| 2 | oloughlin | john | M | 51 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 202 |
| 11 | oloughlin | joseph | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 202 |
| 5 | oloughlin | margaret | F | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 202 |
| 4 | oloughlin | mary | F | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 202 |
| 7 | oloughlin | michael | M | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 202 |
| 10 | oloughlin | thomas | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 202 |
| 23 | oneil | bridget | F | 46 | Roman Catholic | Irish | Ireland | No Occupation Listed | 313 |
| 22 | oneil | charles | M | 52 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 312 |
| 24 | oneil | edward | M | 25 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 313 |
| 3 | oneil | elizabeth | F | 76 | Roman Catholic | Irish | Ireland | No Occupation Listed | 309 |
| 3 | oneil | ellen | F | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 313 |
| 2 | oneil | francis | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 313 |
| 1 | oneil | henry | M | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 313 |
| 25 | oneil | mary | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 313 |
| 4 | oneil | patrick | M | 45 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 309 |
| 5 | oriely | anne | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 64 |
| 24 | oriely | bridget | F | 40 | Roman Catholic | Irish | Ireland | No Occupation Listed | 64 |
| 2 | oriely | james | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 64 |
| 1 | oriely | johanna | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 64 |
| 3 | oriely | joseph | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 64 |
| 25 | oriely | mary | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 64 |
| 4 | oriely | michael | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 64 |
| 23 | oriely | patrick | M | 49 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 64 |
| 6 | oriely | william | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 64 |
| 25 | osullivan | bridget | F | 45 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 7 | osullivan | bridget | F | 6 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 8 | osullivan | catherine | F | 3 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 16 | osullivan | elizabeth | F | 24 | Roman Catholic | Irish | Ontario | No Occupation Listed | 25 |
| 21 | osullivan | francis | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 25 |
| 6 | osullivan | james | M | 8 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 3 | osullivan | johannah | F | 16 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 13 | osullivan | john | M | 56 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 25 |
| 17 | osullivan | john | M | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 25 |
| 9 | osullivan | john | M | 1 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 5 | osullivan | margaret | F | 10 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 18 | osullivan | mary | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 25 |
| 1 | osullivan | mary | F | 20 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 2 | osullivan | p | M | 18 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 15 | osullivan | patrick | M | 26 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 25 |
| 20 | osullivan | peter | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 25 |
| 24 | osullivan | peter | M | 50 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 306 |
| 4 | osullivan | peter | M | 12 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 14 | osullivan | sarah | F | 39 | Roman Catholic | Irish | Ireland | No Occupation Listed | 25 |
| 19 | osullivan | thomas | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 25 |