Residents of Tyendinaga — Sub-district B, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 9 | irvine | maria | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 38 |
| 21 | irwin | albert | M | 4 | Anglican | Irish | Ontario | No Occupation Listed | 3 |
| 17 | irwin | almedia | F | 12 | Anglican | Irish | Ontario | No Occupation Listed | 3 |
| 19 | irwin | ann | F | 8 | Anglican | Irish | Ontario | No Occupation Listed | 3 |
| 20 | irwin | edgar | M | 6 | Anglican | Irish | Ontario | No Occupation Listed | 3 |
| 22 | irwin | elizabeth | F | 2 | Anglican | Irish | Ontario | No Occupation Listed | 3 |
| 16 | irwin | lucinda | F | 30 | Anglican | French | Ontario | No Occupation Listed | 3 |
| 15 | irwin | thomas | M | 34 | Anglican | English | Ontario | river drivers | 3 |
| 18 | irwin | william | M | 10 | Anglican | Irish | Ontario | No Occupation Listed | 3 |