Residents of Orillia, Town—Ville — Sub-district O, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 10 | irish | franklin | M | 16 | Methodist | Irish | Ontario | No Occupation Listed | 269 |
| 13 | irish | jesse | F | 0 | Methodist | Irish | Ontario | No Occupation Listed | 269 |
| 11 | irish | llewellyn | M | 13 | Methodist | Irish | Ontario | No Occupation Listed | 269 |
| 9 | irish | maggie | F | 43 | Methodist | Irish | Ontario | No Occupation Listed | 269 |
| 12 | irish | maggie | F | 4 | Methodist | Irish | Ontario | No Occupation Listed | 269 |
| 8 | irish | mark | M | 43 | Methodist | Irish | Ontario | Farmers, general and nfs | 269 |
| 10 | ironsides | margaret | F | 23 | Roman Catholic | Irish | Ontario | No Occupation Listed | 503 |
| 9 | ironsides | william | M | 30 | Presbyterian | Scottish | Ontario | Coach, carriage, cart and wagon makers | 503 |
| 11 | ironsides | william | M | 1 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 503 |
| 12 | ironsides | | M | 0 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 503 |
| 18 | irving | annie | F | 61 | Episcopal | Scottish | Ireland | No Occupation Listed | 15 |
| 19 | irving | ellen | F | 35 | Episcopal | Scottish | Nova Scotia | No Occupation Listed | 15 |
| 20 | irving | james | M | 19 | Episcopal | Scottish | Ontario | No Occupation Listed | 15 |
| 17 | irving | john | M | 70 | Episcopal | Scottish | Scotland | No Occupation Listed | 15 |