Residents of Maidstone — Sub-district N, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 15 | obrien | charles | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 370 |
| 13 | obrien | james | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 370 |
| 8 | obrien | john | M | 50 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 370 |
| 11 | obrien | john | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 370 |
| 14 | obrien | margaret | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 370 |
| 9 | obrien | mary | F | 34 | Roman Catholic | Irish | Ontario | No Occupation Listed | 370 |
| 10 | obrien | mary | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 370 |
| 12 | obrien | thomas | M | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 370 |
| 16 | oconnor | abigal | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 320 |
| 9 | oconnor | cornelius | M | 40 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 320 |
| 15 | oconnor | cornelius | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 320 |
| 20 | oconnor | edward | M | 31 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 253 |
| 2 | oconnor | ellen | F | 20 | Roman Catholic | Irish | Ontario | Seamstress | 181 |
| 23 | oconnor | ellen | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 253 |
| 25 | oconnor | james | M | 22 | Roman Catholic | Irish | Ontario | Labourers nfs | 181 |
| 11 | oconnor | james | M | 14 | Roman Catholic | Irish | United States | No Occupation Listed | 320 |
| 12 | oconnor | jeremiah | M | 13 | Roman Catholic | Irish | United States | No Occupation Listed | 320 |
| 1 | oconnor | john | M | 21 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 181 |
| 13 | oconnor | leticia | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 320 |
| 24 | oconnor | margaret | F | 44 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 181 |
| 21 | oconnor | margaret | F | 25 | Roman Catholic | Irish | Ontario | No Occupation Listed | 253 |
| 24 | oconnor | margaret | F | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 253 |
| 10 | oconnor | margaret | F | 28 | Roman Catholic | Irish | Ireland | No Occupation Listed | 320 |
| 14 | oconnor | margaret | F | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 320 |
| 4 | oconnor | mary | F | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 181 |
| 25 | oconnor | mary | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 253 |
| 1 | oconnor | rob | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 253 |
| 3 | oconnor | william | M | 19 | Roman Catholic | Irish | Ontario | Labourers nfs | 181 |
| 22 | oconnor | william | M | 80 | Roman Catholic | Irish | Ontario | No Occupation Listed | 253 |
| 15 | ofalvey | john | M | 50 | Roman Catholic | Irish | Ireland | Medical Doctors and physicians (not UK) | 391 |
| 14 | ofalvey | margaret | F | 75 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 391 |
| 10 | oliver | christina | F | 16 | Methodist | French | Ontario | No Occupation Listed | 292 |
| 9 | oliver | john | M | 27 | Anglican | Irish | Ontario | Labourers nfs | 292 |
| 13 | oreily | patrick | M | 43 | Roman Catholic | Irish | Ireland | Labourers nfs | 145 |
| 14 | ouellette | alfred | M | 0 | Roman Catholic | French | Ontario | No Occupation Listed | 175 |
| 9 | ouellette | angele | F | 37 | Roman Catholic | French | United States | No Occupation Listed | 175 |
| 13 | ouellette | charles | M | 5 | Roman Catholic | French | Ontario | No Occupation Listed | 175 |
| 11 | ouellette | eugene | M | 13 | Roman Catholic | French | Ontario | No Occupation Listed | 175 |
| 8 | ouellette | john | M | 44 | Roman Catholic | French | Ontario | Farmers, general and nfs | 175 |
| 10 | ouellette | john | M | 15 | Roman Catholic | French | Ontario | Farmers, general and nfs | 175 |
| 4 | ouellette | margaret | F | 43 | Roman Catholic | French | Ontario | No Occupation Listed | 24 |
| 3 | ouellette | moses | M | 33 | Roman Catholic | French | Ontario | Farmers, general and nfs | 24 |
| 12 | ouellette | theophile | M | 10 | Roman Catholic | French | Ontario | No Occupation Listed | 175 |