Residents of Elderslie — Sub-district M, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 24 | irland | alexander | M | 28 | Presbyterian | Scottish | Ontario | Farmers, general and nfs | 67 |
| 25 | irland | david | M | 21 | Presbyterian | Scottish | Ontario | Farmers, general and nfs | 67 |
| 1 | irland | isibella | F | 19 | Presbyterian | Scottish | Ontario | No Occupation Listed | 67 |
| 21 | irland | robert | M | 63 | Presbyterian | Scottish | Scotland | Farmers, general and nfs | 67 |
| 23 | irland | robert | M | 30 | Presbyterian | Scottish | Ontario | Farmers, general and nfs | 67 |
| 22 | irland | william | M | 32 | Presbyterian | Scottish | Ontario | Farmers, general and nfs | 67 |
| 24 | irvin | hanah | F | 34 | Anglican | Irish | Ontario | No Occupation Listed | 226 |
| 25 | irvin | margaret | F | 2 | Anglican | Irish | Ontario | No Occupation Listed | 226 |
| 23 | irvin | moses | M | 44 | Anglican | Irish | Nova Scotia | Farmers, general and nfs | 226 |
| 1 | irvin | sarah | F | 1 | Anglican | Irish | Ontario | No Occupation Listed | 226 |
| 17 | irwin | alexander | M | 19 | Anglican | Irish | Ontario | No Occupation Listed | 233 |
| 20 | irwin | catherine | F | 20 | Anglican | Irish | Ontario | No Occupation Listed | 233 |
| 15 | irwin | david | M | 65 | Anglican | Irish | Ontario | Farmers, general and nfs | 233 |
| 18 | irwin | david | M | 24 | Anglican | Irish | Ontario | No Occupation Listed | 233 |
| 19 | irwin | martha | F | 24 | Anglican | Irish | Ontario | No Occupation Listed | 233 |
| 16 | irwin | shusan | F | 63 | Anglican | Irish | Ireland | No Occupation Listed | 233 |
| 21 | irwin | shusan | F | 17 | Anglican | Irish | Ontario | No Occupation Listed | 233 |