Residents of Whitby, Town—Ville — Sub-district C, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 24 | odonavan | jane | F | 42 | Roman Catholic | English | Quebec | No Occupation Listed | 205 |
| 25 | odonavan | john | M | 20 | Roman Catholic | English | Quebec | Coach, carriage, cart and wagon makers | 205 |
| 23 | odonavan | michael | M | 47 | Roman Catholic | Irish | Quebec | Coach, carriage, cart and wagon makers | 205 |
| 22 | odonnel | annie | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 207 |
| 18 | odonnel | henry | M | 22 | Roman Catholic | Irish | Ontario | Painters, nfs | 207 |
| 21 | odonnel | jennie | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 207 |
| 16 | odonnel | john | M | 60 | Roman Catholic | Irish | Ireland | Labourers nfs | 207 |
| 19 | odonnel | john | M | 21 | Roman Catholic | Irish | Ontario | Drivers (public) | 207 |
| 17 | odonnel | minnie | F | 45 | Roman Catholic | Irish | Ireland | No Occupation Listed | 207 |
| 20 | odonnel | nelly | F | 16 | Roman Catholic | Irish | Ontario | No Occupation Listed | 207 |
| 23 | odonnel | thomas | M | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 207 |
| 11 | omeila | catherine | F | 55 | Roman Catholic | Irish | Ireland | No Occupation Listed | 157 |
| 12 | omeila | cornelius | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 157 |
| 13 | omeila | mary | F | 17 | Roman Catholic | Irish | Ontario | No Occupation Listed | 157 |
| 21 | oneil | eliza | F | 40 | Methodist | Irish | Ontario | No Occupation Listed | 10 |
| 2 | ormiston | david | M | 48 | Presbyterian | Scottish | Scotland | barrister | 124 |
| 3 | ormiston | elizabeth | F | 45 | Presbyterian | Scottish | Ontario | No Occupation Listed | 124 |
| 6 | ormiston | hellen | F | 12 | Presbyterian | Scottish | Ontario | No Occupation Listed | 124 |
| 5 | ormiston | margret | F | 15 | Presbyterian | Scottish | Ontario | No Occupation Listed | 124 |
| 4 | ormiston | william | M | 18 | Presbyterian | Scottish | Ontario | No Occupation Listed | 124 |