Residents of Thurlow — Sub-district A, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 4 | iles | sarah | F | 36 | Methodist | German | Ontario | No Occupation Listed | 189 |
| 15 | irvian | albert | M | 13 | Methodist | English | Ontario | No Occupation Listed | 100 |
| 19 | irvian | george | M | 3 | Methodist | English | Ontario | No Occupation Listed | 100 |
| 14 | irvian | helen | F | 40 | Methodist | English | Ontario | No Occupation Listed | 100 |
| 16 | irvian | mary | F | 9 | Methodist | English | Ontario | No Occupation Listed | 100 |
| 17 | irvian | minnie | F | 7 | Methodist | English | Ontario | No Occupation Listed | 100 |
| 13 | irvian | stephen | M | 50 | Methodist | English | England | Farmers, general and nfs | 100 |
| 18 | irvian | travis | M | 6 | Methodist | English | Ontario | No Occupation Listed | 100 |
| 10 | irwin | embery | M | 14 | Anglican | Irish | Ontario | No Occupation Listed | 116 |
| 8 | irwin | fanny | F | 36 | Anglican | Irish | Ontario | No Occupation Listed | 116 |
| 11 | irwin | isabella | F | 13 | Anglican | Irish | Ontario | No Occupation Listed | 116 |
| 7 | irwin | john | M | 41 | Anglican | Irish | Ontario | Farmers, general and nfs | 116 |
| 13 | irwin | matilda | F | 0 | Anglican | Irish | Ontario | No Occupation Listed | 116 |
| 12 | irwin | thomas | M | 2 | Anglican | Irish | Ontario | No Occupation Listed | 116 |
| 9 | irwin | william | M | 16 | Anglican | Irish | Ontario | No Occupation Listed | 116 |
| 14 | irwin | william | M | 66 | Anglican | Irish | Ireland | Farmers, general and nfs | 117 |