Residents of Elora, VL — Sub-district C, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 10 | oconnell | henry | M | 40 | Roman Catholic | Irish | Ireland | Labourers nfs | 103 |
| 12 | oconnell | margaret | F | 8 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 103 |
| 11 | oconnell | mary | F | 40 | Roman Catholic | Irish | Ireland | No Occupation Listed | 103 |
| 9 | odonahoe | thomas | M | 24 | Roman Catholic | Irish | Ontario | Clerk, nfs | 126 |
| 1 | oliver | herbert | M | 0 | Anglican | English | Ontario | No Occupation Listed | 253 |
| 25 | oliver | mary | F | 23 | Anglican | English | Ontario | No Occupation Listed | 253 |
| 24 | oliver | william | M | 35 | Anglican | English | Ontario | No Occupation Listed | 253 |