Residents of Mono — Sub-district E, surnames I (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 13 | irwin | anne | F | 28 | Anglican | Irish | Ontario | No Occupation Listed | 157 |
| 23 | irwin | annie | F | 14 | Presbyterian | Irish | Ontario | No Occupation Listed | 223 |
| 11 | irwin | archibald | M | 34 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 19 |
| 4 | irwin | archibald | M | 23 | Methodist | Irish | Ontario | Farmers, general and nfs | 195 |
| 11 | irwin | caroline | F | 10 | Methodist | Irish | Ontario | No Occupation Listed | 195 |
| 14 | irwin | catherine | F | 5 | Presbyterian | Irish | Ontario | No Occupation Listed | 19 |
| 23 | irwin | christophe | M | 57 | Presbyterian | Irish | Ireland | Farmers, general and nfs | 75 |
| 17 | irwin | christopher | M | 60 | Presbyterian | Irish | Ireland | Farmers, general and nfs | 223 |
| 18 | irwin | doratha | F | 5 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 187 |
| 11 | irwin | elizabeth | F | 25 | Anglican | Irish | Ontario | No Occupation Listed | 157 |
| 10 | irwin | elizabeth | F | 10 | Methodist | Irish | Ontario | No Occupation Listed | 195 |
| 3 | irwin | elizebeth | F | 60 | Presbyterian | Irish | Ireland | No Occupation Listed | 157 |
| 20 | irwin | emma | F | 2 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 187 |
| 4 | irwin | epherahn | M | 30 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 157 |
| 3 | irwin | george | M | 17 | Presbyterian | Irish | Ontario | Labourers nfs | 75 |
| 8 | irwin | isabella | F | 14 | Methodist | Irish | Ontario | No Occupation Listed | 195 |
| 22 | irwin | jackson | M | 16 | Presbyterian | Irish | Ontario | No Occupation Listed | 223 |
| 24 | irwin | james | M | 24 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 75 |
| 5 | irwin | james | M | 65 | Presbyterian | Irish | Ireland | Farmers, general and nfs | 76 |
| 2 | irwin | james | M | 70 | Presbyterian | Irish | Ireland | Farmers, general and nfs | 157 |
| 5 | irwin | james | M | 25 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 157 |
| 2 | irwin | james | M | 48 | Methodist | Irish | Ontario | Farmers, general and nfs | 195 |
| 5 | irwin | james | M | 21 | Methodist | Irish | Ontario | Farmers, general and nfs | 195 |
| 8 | irwin | jane | F | 32 | Anglican | Irish | Ontario | No Occupation Listed | 182 |
| 18 | irwin | jane | F | 58 | Presbyterian | Irish | Ireland | No Occupation Listed | 223 |
| 3 | irwin | jane | F | 36 | Presbyterian | Irish | Ontario | No Occupation Listed | 77 |
| 14 | irwin | jane | F | 65 | Anglican | Irish | Ireland | No Occupation Listed | 186 |
| 17 | irwin | jane | F | 29 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 187 |
| 15 | irwin | john | M | 3 | Presbyterian | Irish | Ontario | No Occupation Listed | 19 |
| 1 | irwin | john | M | 20 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 75 |
| 6 | irwin | john | M | 6 | Presbyterian | Irish | Ontario | No Occupation Listed | 77 |
| 21 | irwin | maggie | F | 0 | Primitive Methodist | Blank | Ontario | No Occupation Listed | 187 |
| 15 | irwin | margaret | F | 26 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 186 |
| 7 | irwin | margaret | F | 17 | Methodist | Irish | Ontario | No Occupation Listed | 195 |
| 7 | irwin | martha | F | 3 | Presbyterian | Irish | Ontario | No Occupation Listed | 77 |
| 12 | irwin | mary | F | 31 | Presbyterian | Irish | United States | No Occupation Listed | 19 |
| 2 | irwin | mary | F | 13 | Presbyterian | Irish | Ontario | No Occupation Listed | 75 |
| 6 | irwin | mary | F | 23 | Presbyterian | Irish | Ontario | No Occupation Listed | 157 |
| 9 | irwin | mary | F | 12 | Anglican | Irish | Ontario | No Occupation Listed | 182 |
| 5 | irwin | mary | F | 8 | Presbyterian | Irish | Ontario | No Occupation Listed | 77 |
| 12 | irwin | mary | F | 0 | Anglican | Irish | Ontario | No Occupation Listed | 157 |
| 3 | irwin | mary | F | 46 | Methodist | Irish | Ireland | No Occupation Listed | 195 |
| 9 | irwin | mary | F | 12 | Methodist | Irish | Ontario | No Occupation Listed | 195 |
| 6 | irwin | rachel | F | 57 | Presbyterian | Irish | Ireland | No Occupation Listed | 76 |
| 13 | irwin | robert | M | 9 | Presbyterian | Irish | Ontario | No Occupation Listed | 19 |
| 12 | irwin | robert | M | 21 | Presbyterian | Irish | Ireland | Labourers nfs | 50 |
| 7 | irwin | robert | M | 23 | Presbyterian | Irish | Ireland | Blacksmiths | 76 |
| 16 | irwin | robert | M | 35 | Primitive Methodist | Irish | Ontario | Farmers, general and nfs | 187 |
| 25 | irwin | samuel | M | 22 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 75 |
| 19 | irwin | samuel | M | 3 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 187 |
| 7 | irwin | sarah | F | 21 | Presbyterian | Irish | Ontario | No Occupation Listed | 157 |
| 21 | irwin | sarah | F | 18 | Presbyterian | Irish | Ontario | No Occupation Listed | 223 |
| 6 | irwin | sarah | F | 19 | Methodist | Irish | Ontario | No Occupation Listed | 195 |
| 4 | irwin | william | M | 30 | Presbyterian | Irish | Ontario | Labourers nfs | 76 |
| 7 | irwin | william | M | 45 | Anglican | Irish | Ontario | Farmers, general and nfs | 182 |
| 20 | irwin | william | M | 26 | Presbyterian | Irish | Ontario | No Occupation Listed | 223 |
| 2 | irwin | william | M | 40 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 77 |
| 4 | irwin | william | M | 11 | Presbyterian | Irish | Ontario | No Occupation Listed | 77 |
| 10 | irwin | william | M | 30 | Anglican | Irish | Ontario | Farmers, general and nfs | 157 |
| 9 | isack | james | M | 80 | Anglican | Irish | Ireland | No Occupation Listed | 153 |
| 10 | isack | martha | F | 77 | Anglican | Irish | Ireland | No Occupation Listed | 153 |
| 17 | island | ann | F | 40 | Anglican | Irish | Ireland | No Occupation Listed | 92 |
| 5 | island | elizabeth | F | 12 | Anglican | Irish | Ontario | No Occupation Listed | 46 |
| 19 | island | elizabeth | F | 2 | Anglican | Irish | Ontario | No Occupation Listed | 49 |
| 19 | island | elizebeth | F | 14 | Anglican | Irish | Ontario | No Occupation Listed | 92 |
| 23 | island | ellen | F | 4 | Anglican | Irish | Ontario | No Occupation Listed | 92 |
| 2 | island | george | M | 45 | Anglican | Irish | Ontario | Farmers, general and nfs | 46 |
| 7 | island | george | M | 8 | Anglican | Irish | Ontario | No Occupation Listed | 46 |
| 22 | island | james | M | 8 | Anglican | Irish | Ontario | No Occupation Listed | 92 |
| 23 | island | jane | F | 27 | Anglican | Irish | Ontario | No Occupation Listed | 51 |
| 18 | island | john | M | 15 | Anglican | Irish | Ontario | No Occupation Listed | 92 |
| 8 | island | john | M | 5 | Anglican | Irish | Ontario | No Occupation Listed | 46 |
| 18 | island | john | M | 38 | Anglican | Irish | Ontario | Farmers, general and nfs | 49 |
| 20 | island | john | M | 1 | Anglican | Irish | Ontario | No Occupation Listed | 49 |
| 16 | island | joseph | M | 42 | Anglican | Irish | Ontario | Farmers, general and nfs | 92 |
| 20 | island | joseph | M | 12 | Anglican | Irish | Ontario | No Occupation Listed | 92 |
| 3 | island | mary | F | 38 | Anglican | Irish | Ontario | No Occupation Listed | 46 |
| 21 | island | michael | M | 78 | Anglican | Irish | Ireland | No Occupation Listed | 50 |
| 6 | island | robert | M | 10 | Anglican | Irish | Ontario | No Occupation Listed | 46 |
| 4 | island | samuel | M | 14 | Anglican | Irish | Ontario | No Occupation Listed | 46 |
| 21 | island | william | M | 10 | Anglican | Irish | Ontario | No Occupation Listed | 92 |
| 9 | island | william | M | 2 | Anglican | Irish | Ontario | No Occupation Listed | 46 |
| 22 | island | william | M | 32 | Anglican | Irish | Ontario | Farmers, general and nfs | 51 |