Residents of Vaughan — Sub-district E, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 18 | oaster | catherine | F | 28 | Presbyterian | Irish | Ontario | No Occupation Listed | 110 |
| 16 | oaster | george | M | 36 | Presbyterian | Irish | Ontario | Carpenters | 110 |
| 15 | oaster | jane | F | 63 | Presbyterian | Irish | Ireland | No Occupation Listed | 110 |
| 19 | oaster | jashor | M | 27 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 110 |
| 17 | oaster | solomon | M | 30 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 110 |
| 8 | oates | william | M | 30 | Methodist | English | England | Boot and shoemakers and repairers | 146 |
| 7 | obrien | elizabeth | F | 24 | Primitive Methodist | German | Ontario | No Occupation Listed | 185 |
| 8 | obrien | joseph | M | 0 | Primitive Methodist | Irish | Ontario | No Occupation Listed | 185 |
| 9 | obrien | margret | F | 20 | Primitive Methodist | German | Ontario | No Occupation Listed | 185 |
| 6 | obrien | michel | M | 24 | Primitive Methodist | Irish | Ontario | Servants nfs | 185 |
| 12 | oconnir | patrick | M | 72 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 3 |
| 17 | oconnor | cinneretta | F | 23 | Roman Catholic | English | Ontario | No Occupation Listed | 4 |
| 13 | oconnor | elizabeth | F | 70 | Roman Catholic | German | Ontario | No Occupation Listed | 3 |
| 16 | oconnor | james | M | 34 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 4 |
| 18 | oconnor | james | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 4 |
| 14 | oconnor | joanna | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 3 |
| 15 | oconnor | mary | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 3 |
| 13 | odonnell | alice | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 72 |
| 9 | odonnell | james | M | 27 | Roman Catholic | Irish | Ontario | river drivers | 72 |
| 11 | odonnell | john | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 72 |
| 10 | odonnell | margaret | F | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 72 |
| 14 | odonnell | margaret | F | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 72 |
| 12 | odonnell | mary | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 72 |
| 12 | ohara | alfred | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 166 |
| 10 | ohara | bartolomew | M | 28 | Roman Catholic | Irish | Ontario | Coopers etc. | 166 |
| 13 | ohara | charles | M | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 166 |
| 14 | ohara | lora | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 166 |
| 11 | ohara | martha | F | 25 | Roman Catholic | English | Ontario | No Occupation Listed | 166 |
| 10 | ohearn | john | M | 76 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 109 |
| 11 | ohearn | mary | F | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 109 |
| 13 | ohearn | mary | F | 22 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 12 | ohearn | thomas | M | 28 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 109 |
| 23 | oliver | james | M | 27 | Methodist | English | Ontario | Farmers, general and nfs | 111 |
| 22 | oliver | joshua | M | 59 | Methodist | English | England | Farmers, general and nfs | 188 |
| 23 | oliver | mary | F | 58 | Methodist | English | England | No Occupation Listed | 188 |
| 1 | oliver | mary | F | 16 | Methodist | English | Ontario | No Occupation Listed | 188 |
| 25 | oliver | samuel | M | 3 | Methodist | English | Ontario | No Occupation Listed | 111 |
| 24 | oliver | sarah | F | 28 | Methodist | German | Ontario | No Occupation Listed | 111 |
| 24 | oliver | sarah | F | 24 | Methodist | English | Ontario | No Occupation Listed | 188 |
| 25 | oliver | thomas | M | 22 | Methodist | English | Ontario | No Occupation Listed | 188 |
| 24 | olliver | agnes | F | 23 | Presbyterian | English | Ontario | No Occupation Listed | 117 |
| 25 | olliver | may | F | 3 | Presbyterian | Scottish | Ontario | No Occupation Listed | 117 |
| 23 | olliver | robert | M | 26 | Presbyterian | Scottish | Scotland | Farmers, general and nfs | 117 |
| 1 | olliver | william | M | 1 | Presbyterian | English | Ontario | No Occupation Listed | 117 |
| 24 | oneill | james | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 161 |
| 23 | oneill | jane | F | 25 | Roman Catholic | Irish | Ontario | No Occupation Listed | 161 |
| 22 | oneill | thomas | M | 27 | Roman Catholic | Irish | Ontario | Hotel Keepers and Managers | 161 |
| 25 | orr | edward | M | 35 | Anglican | Irish | Ireland | Labourers nfs | 129 |
| 20 | orr | jannabella | F | 24 | Anglican | Irish | Ireland | No Occupation Listed | 150 |
| 1 | orr | john | M | 33 | Anglican | Irish | Ireland | No Occupation Listed | 129 |
| 2 | orr | margaret | F | 30 | Anglican | Irish | Ireland | No Occupation Listed | 129 |
| 9 | orr | mary | F | 25 | Methodist | Irish | Ontario | No Occupation Listed | 113 |
| 3 | orr | mary | F | 31 | Anglican | Irish | Ireland | No Occupation Listed | 129 |
| 19 | orr | robert | M | 27 | Anglican | Irish | Ireland | Labourers nfs | 150 |
| 8 | orr | roland | M | 29 | Methodist | Irish | Ontario | Medical Doctors and physicians (not UK) | 113 |
| 21 | orr | sarah | F | 0 | Anglican | Irish | Ontario | No Occupation Listed | 150 |
| 23 | orth | abraham | M | 34 | Methodist | German | Ontario | Farmers, general and nfs | 48 |
| 24 | orth | elizabeth | F | 24 | Methodist | Irish | Ontario | No Occupation Listed | 48 |
| 2 | oster | alexander | M | 24 | Lutheran | German | Ontario | Farmers, general and nfs | 136 |
| 1 | oster | arron | M | 26 | Lutheran | German | Ontario | Farmers, general and nfs | 136 |
| 24 | oster | cherry | F | 47 | Lutheran | German | Ontario | No Occupation Listed | 136 |
| 12 | oster | emma | F | 25 | Lutheran | Irish | Ontario | No Occupation Listed | 41 |
| 13 | oster | james | M | 35 | Lutheran | Blank | United States | Farmers, general and nfs | 61 |
| 14 | oster | jane | F | 35 | Lutheran | English | England | No Occupation Listed | 61 |
| 11 | oster | john | M | 18 | Lutheran | German | Ontario | Labourers nfs | 119 |
| 13 | oster | lewis | M | 8 | Lutheran | Irish | Ontario | No Occupation Listed | 41 |
| 14 | oster | margret | F | 6 | Lutheran | Irish | Ontario | No Occupation Listed | 41 |
| 3 | oster | margret | F | 22 | Lutheran | German | Ontario | No Occupation Listed | 136 |
| 15 | oster | martha | F | 6 | Lutheran | Irish | Ontario | No Occupation Listed | 41 |
| 11 | oster | michal | M | 28 | Lutheran | Irish | Ontario | Farmers, general and nfs | 41 |
| 23 | oster | michal | M | 66 | Lutheran | German | Ontario | Farmers, general and nfs | 136 |
| 16 | oster | stella | F | 2 | Lutheran | Irish | Ontario | No Occupation Listed | 41 |
| 25 | oster | thomas | M | 28 | Lutheran | German | Ontario | Farmers, general and nfs | 136 |
| 1 | oster | william | M | 30 | Lutheran | German | Germany | Farmers, general and nfs | 63 |
| 3 | overling | sharlet | F | 69 | Lutheran | German | Germany | No Occupation Listed | 212 |
| 19 | overturn | arthur | M | 17 | Methodist | English | Quebec | Painters, nfs | 207 |
| 17 | owens | elizabeth | F | 85 | Anglican | English | Ontario | No Occupation Listed | 66 |