Residents of London, Ward—Quartier No. 7 — Sub-district G, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 22 | oak | alice | F | 49 | Roman Catholic | Irish | Ontario | No Occupation Listed | 195 |
| 4 | oak | charles | M | 15 | Wesleyan Methodist | English | Ontario | Cigar makers | 7 |
| 3 | oak | eliza | F | 16 | Wesleyan Methodist | English | Ontario | No Occupation Listed | 7 |
| 2 | oak | john | M | 19 | Wesleyan Methodist | English | Ontario | Machinists | 7 |
| 24 | oak | john | M | 19 | Methodist | English | Ontario | Carpenters | 195 |
| 23 | oak | mary | F | 23 | Methodist | English | Ontario | No Occupation Listed | 195 |
| 1 | oak | philip | M | 33 | Wesleyan Methodist | English | Ontario | Teamsters (inc. mine driver, etc.) | 7 |
| 21 | oak | richard | M | 55 | Methodist | English | England | Carpenters | 195 |
| 8 | oak | richard | M | 30 | Methodist | English | Ontario | Gardeners nfs | 300 |
| 25 | oak | ritchard | M | 30 | Wesleyan Methodist | English | Ontario | Gardeners nfs | 7 |
| 9 | oak | sarah | F | 31 | Methodist | English | Ontario | No Occupation Listed | 300 |
| 24 | oak | william | M | 50 | Wesleyan Methodist | English | England | Carpenters | 7 |
| 25 | oak | william | M | 17 | Methodist | English | Ontario | Carpenters | 195 |
| 14 | obrian | michael | M | 7 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 8 | oconnel | johanna | F | 72 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 24 | odrywer | daniel | M | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 306 |
| 23 | odrywer | | M | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 306 |
| 11 | odwyer | annie | F | 29 | Roman Catholic | Scottish | Ontario | No Occupation Listed | 3 |
| 10 | odwyer | patrick | M | 30 | Roman Catholic | Irish | Ireland | Coopers etc. | 3 |
| 12 | odwyer | william | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 3 |
| 15 | odywer | agness | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 306 |
| 21 | odywer | daniel | M | 23 | Roman Catholic | Irish | Ontario | Blacksmiths | 254 |
| 19 | odywer | jane | F | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 254 |
| 22 | odywer | jeremiah | M | 20 | Roman Catholic | Irish | Ontario | Labourers nfs | 254 |
| 24 | odywer | mary | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 254 |
| 18 | odywer | may | F | 53 | Roman Catholic | Irish | Ireland | No Occupation Listed | 254 |
| 20 | odywer | steph | M | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 23 | odywer | thomas | M | 17 | Roman Catholic | Irish | Ontario | Bottlers | 254 |
| 20 | odywer | william | M | 24 | Roman Catholic | Irish | Ontario | Other specialised painters nec | 254 |
| 15 | oholland | james | M | 13 | Roman Catholic | Irish | Ontario | No Occupation Listed | 306 |
| 16 | oholland | john | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 306 |
| 16 | oholland | john | M | 66 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 8 | oriley | owen | M | 73 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 14 | osbornne | frederick | M | 21 | Anglican | English | England | Railroad, railway clerks | 77 |
| 13 | osbornne | jane | F | 51 | Anglican | English | England | No Occupation Listed | 77 |
| 15 | osbornne | john | M | 19 | Anglican | English | England | Railroad, railway clerks | 77 |
| 16 | osbornne | joseph | M | 41 | Anglican | English | England | Customs officers | 77 |
| 24 | oshea | annie | F | 80 | Roman Catholic | Irish | Ireland | No Occupation Listed | 306 |
| 8 | otley | eliza | F | 64 | Presbyterian | Scottish | Scotland | No Occupation Listed | 242 |
| 7 | otley | michael | M | 55 | Roman Catholic | Irish | Ireland | Labourers nfs | 242 |
| 3 | otoole | annie | F | 25 | Roman Catholic | Irish | Ontario | No Occupation Listed | 294 |
| 1 | otoole | anthony | M | 55 | Roman Catholic | Irish | Ireland | Labourers nfs | 294 |
| 9 | otoole | anthony | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 294 |
| 6 | otoole | flora | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 294 |
| 4 | otoole | helen | F | 16 | Roman Catholic | Irish | Ontario | Servants nfs | 294 |
| 2 | otoole | jessie | F | 42 | Roman Catholic | Irish | Prince Edward Island | No Occupation Listed | 294 |
| 8 | otoole | jessie | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 294 |
| 7 | otoole | maggie | F | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 294 |
| 5 | otoole | susan | F | 14 | Roman Catholic | Irish | Ontario | Servants nfs | 294 |
| 24 | owen | annie | F | 34 | Christian | English | Ontario | No Occupation Listed | 293 |
| 23 | owen | charles | M | 37 | Christian | English | Ontario | Other makers of wooden products | 293 |
| 25 | owen | clara | F | 7 | Christian | English | Ontario | No Occupation Listed | 293 |
| 19 | owens | charles | M | 40 | Anglican | English | England | Other makers of wooden products | 288 |
| 23 | owens | helen | F | 3 | Anglican | English | Ontario | No Occupation Listed | 288 |
| 20 | owens | margerett | F | 35 | Anglican | English | England | No Occupation Listed | 288 |
| 21 | owens | margerett | F | 7 | Anglican | English | England | No Occupation Listed | 288 |
| 22 | owens | mary | F | 5 | Anglican | English | Ontario | No Occupation Listed | 288 |