Residents of Lansdowne, Rear — Sub-district B, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 6 | oconnor | bridget | F | 67 | Roman Catholic | Irish | Ireland | No Occupation Listed | 171 |
| 10 | oconnor | charles | M | 32 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 172 |
| 9 | oconnor | charlotte | F | 22 | Roman Catholic | Irish | Ireland | No Occupation Listed | 171 |
| 7 | oconnor | ellen | F | 33 | Roman Catholic | Irish | Ireland | No Occupation Listed | 171 |
| 11 | oconnor | emily | F | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 172 |
| 12 | oconnor | fergus | M | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 172 |
| 8 | oconnor | marria | F | 24 | Roman Catholic | Irish | Ireland | No Occupation Listed | 171 |
| 16 | osborn | fanny | F | 40 | Anglican | English | England | No Occupation Listed | 8 |
| 15 | osborn | john | M | 32 | Anglican | English | England | Ministers of Religion | 8 |
| 17 | osborn | reginald | M | 4 | Anglican | English | Ontario | No Occupation Listed | 8 |