Residents of Cartwright — Sub-district D, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 3 | irwin | annie | F | 50 | Anglican | Irish | Ireland | No Occupation Listed | 81 |
| 5 | irwin | charles | M | 15 | Anglican | Irish | Ontario | Farmers, general and nfs | 81 |
| 14 | irwin | david | M | 11 | Anglican | Irish | Ireland | No Occupation Listed | 3 |
| 12 | irwin | isiah | M | 40 | Anglican | Irish | Ireland | river drivers | 3 |
| 18 | irwin | isiah | M | 1 | Anglican | Irish | Ontario | No Occupation Listed | 3 |
| 13 | irwin | jane | F | 36 | Anglican | Irish | Ireland | No Occupation Listed | 3 |
| 2 | irwin | jason | M | 50 | Anglican | Irish | Ireland | Farmers, general and nfs | 81 |
| 12 | irwin | leonard | M | 31 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 154 |
| 15 | irwin | mable | F | 2 | Presbyterian | Irish | Ontario | No Occupation Listed | 154 |
| 15 | irwin | mary | F | 9 | Anglican | Irish | Ireland | No Occupation Listed | 3 |
| 4 | irwin | mary | F | 17 | Anglican | Irish | Ontario | No Occupation Listed | 81 |
| 13 | irwin | mary | F | 29 | Presbyterian | Irish | Ontario | No Occupation Listed | 154 |
| 16 | irwin | mary | F | 1 | Presbyterian | Irish | Ontario | No Occupation Listed | 154 |
| 17 | irwin | sarah | F | 4 | Anglican | Irish | Ontario | No Occupation Listed | 3 |
| 14 | irwin | wilbert | M | 4 | Presbyterian | Irish | Ontario | No Occupation Listed | 154 |
| 16 | irwin | william | M | 7 | Anglican | Irish | Ireland | No Occupation Listed | 3 |