Residents of Huntingdon — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 7 | oconnell | catherine | F | 25 | Roman Catholic | Irish | Ontario | No Occupation Listed | 32 |
| 8 | oconnell | catherine | F | 65 | Roman Catholic | Irish | Ireland | No Occupation Listed | 32 |
| 4 | oconnell | catherine | F | 35 | Roman Catholic | Irish | Ireland | No Occupation Listed | 37 |
| 8 | oconnell | elen | F | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 37 |
| 7 | oconnell | hugh | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 37 |
| 5 | oconnell | james | M | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 37 |
| 6 | oconnell | john | M | 34 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 32 |
| 6 | oconnell | john | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 37 |
| 3 | oconnell | micheal | M | 46 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 37 |
| 17 | odonald | danice | M | 63 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 78 |
| 19 | odonald | james | M | 18 | Roman Catholic | Irish | Ontario | Teachers (unspecified) | 78 |
| 20 | odonald | john | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 78 |
| 18 | odonald | maryann | F | 56 | Roman Catholic | Irish | Ontario | No Occupation Listed | 78 |
| 2 | oreily | james | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 24 | oreily | john | M | 41 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 41 |
| 4 | oreily | john | M | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 6 | oreily | margaret | F | 70 | Roman Catholic | Irish | Ireland | No Occupation Listed | 49 |
| 25 | oreily | mary | F | 40 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 3 | oreily | mary | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 1 | oreily | teresa | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 41 |
| 14 | orr | elizabeth | F | 15 | Presbyterian | Irish | Ontario | No Occupation Listed | 105 |
| 12 | orr | james | M | 45 | Presbyterian | Irish | Ireland | Farmers, general and nfs | 105 |
| 15 | orr | john | M | 14 | Presbyterian | Irish | Ontario | No Occupation Listed | 105 |
| 13 | orr | sarah | F | 50 | Presbyterian | Irish | Ontario | No Occupation Listed | 105 |
| 4 | osburn | agnes | F | 24 | Anglican | Irish | Ontario | No Occupation Listed | 166 |
| 3 | osburn | alma | F | 0 | Methodist | German | Ontario | No Occupation Listed | 287 |
| 24 | osburn | bidwell | M | 35 | Methodist | German | Ontario | Carpenters | 287 |
| 5 | osburn | elizabeth | F | 22 | Anglican | Irish | Ontario | No Occupation Listed | 166 |
| 1 | osburn | florance | F | 8 | Methodist | German | Ontario | No Occupation Listed | 287 |
| 2 | osburn | george | M | 5 | Methodist | German | Ontario | No Occupation Listed | 287 |
| 2 | osburn | james | M | 55 | Anglican | Irish | Ireland | Carpenters | 166 |
| 9 | osburn | james | M | 6 | Anglican | Irish | Ontario | No Occupation Listed | 166 |
| 3 | osburn | jane | F | 55 | Anglican | Irish | Ireland | No Occupation Listed | 166 |
| 7 | osburn | jane | F | 19 | Anglican | Irish | Ontario | No Occupation Listed | 166 |
| 6 | osburn | john | M | 21 | Anglican | Irish | Ontario | Carpenters | 166 |
| 25 | osburn | margret | F | 34 | Methodist | German | Ontario | No Occupation Listed | 287 |
| 8 | osburn | sarah | F | 17 | Anglican | Irish | Ontario | No Occupation Listed | 166 |
| 10 | osburn | susen | F | 14 | Anglican | Irish | Ontario | No Occupation Listed | 166 |