Residents of Ste. Brigitte — Sub-district F, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 7 | irwin | jane | F | 5 | | Irish | Quebec | No Occupation Listed | 46 |
| 5 | irwin | john | M | 13 | | Irish | Quebec | No Occupation Listed | 46 |
| 3 | irwin | magaret | F | 40 | | Irish | Quebec | No Occupation Listed | 46 |
| 9 | irwin | marget | F | 1 | | Irish | Quebec | No Occupation Listed | 46 |
| 6 | irwin | mary | F | 11 | | Irish | Quebec | No Occupation Listed | 46 |
| 2 | irwin | samuel | M | 42 | | Irish | Quebec | Farmers, general and nfs | 46 |
| 4 | irwin | samuel | M | 14 | | Irish | Quebec | No Occupation Listed | 46 |
| 8 | irwin | william | M | 3 | | Irish | Quebec | No Occupation Listed | 46 |