Residents of Brockville, Centre Ward—Quartier — Sub-district C, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
|---|---|---|---|---|---|---|---|---|---|
| 18 | irwin | edwd | M | 28 | Anglican | English | United States | No Occupation Listed | 5 |
| 10 | irwin | ruth | F | 14 | Methodist | Irish | Ontario | No Occupation Listed | 34 |