Residents of Arthur, Village — Sub-district G, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 17 | ocalaghan | edmond | M | 44 | Roman Catholic | Irish | Ontario | Superintendents and managers, nfs | 84 |
| 19 | ocalaghan | edmond | M | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 18 | ocalaghan | issebella | F | 45 | Roman Catholic | Scottish | Scotland | No Occupation Listed | 84 |
| 20 | ocalaghan | mary | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 9 | oconnor | allice | F | 20 | Roman Catholic | Irish | Ontario | Seamstress | 116 |
| 6 | odonnell | bernard | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 5 | odonnell | bridget | F | 57 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 9 | odonnell | bridget | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 12 | odonnell | catherine | F | 36 | Roman Catholic | Irish | Ireland | No Occupation Listed | 78 |
| 17 | odonnell | catherine | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 78 |
| 8 | odonnell | daniel | M | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 14 | odonnell | eleanor | F | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 78 |
| 15 | odonnell | elizebeth | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 78 |
| 11 | odonnell | ellen | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 25 | odonnell | ellen | F | 18 | Roman Catholic | Irish | Ontario | Tailors and tailoresses | 210 |
| 4 | odonnell | john | M | 42 | Roman Catholic | Irish | Ontario | Dealer, merchant etc. (Wholesale & retail trade) | 63 |
| 12 | odonnell | john | M | 28 | Roman Catholic | Irish | Ontario | Labourers nfs | 151 |
| 11 | odonnell | julia | F | 65 | Roman Catholic | Irish | Ireland | No Occupation Listed | 151 |
| 13 | odonnell | julia | F | 23 | Roman Catholic | Irish | Ontario | No Occupation Listed | 151 |
| 7 | odonnell | mary | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 13 | odonnell | mary | F | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 78 |
| 10 | odonnell | michael | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 23 | odonnell | neil | M | 55 | Roman Catholic | Irish | Ireland | No Occupation Listed | 210 |
| 16 | odonnell | patrick | M | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 78 |
| 24 | odonnell | sarah | F | 21 | Roman Catholic | Irish | Ontario | Tailors and tailoresses | 210 |
| 12 | odonnell | teresa | F | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 63 |
| 17 | ofield | barbara | F | 29 | Anglican | Scottish | Ontario | No Occupation Listed | 113 |
| 18 | ofield | george | M | 7 | Anglican | English | Ontario | No Occupation Listed | 113 |
| 16 | ofield | james | M | 38 | Anglican | English | Ontario | Agent nfs | 113 |
| 19 | ofield | mabel | F | 3 | Anglican | English | Ontario | No Occupation Listed | 113 |
| 20 | ofield | wilfred | M | 0 | Anglican | English | Ontario | No Occupation Listed | 113 |
| 12 | ogden | alexander | M | 36 | Anglican | English | Ontario | Butchers | 11 |
| 20 | ogden | alexander | M | 0 | Anglican | English | Ontario | No Occupation Listed | 11 |
| 16 | ogden | charles | M | 10 | Anglican | English | Ontario | No Occupation Listed | 11 |
| 17 | ogden | edward | M | 8 | Anglican | English | Ontario | No Occupation Listed | 11 |
| 13 | ogden | eleanor | F | 28 | Anglican | Irish | Ontario | No Occupation Listed | 11 |
| 15 | ogden | florence | F | 12 | Anglican | English | Ontario | No Occupation Listed | 11 |
| 16 | ogden | george | M | 27 | Anglican | English | Ontario | Clerks in shops and stores | 238 |
| 18 | ogden | henrieta | F | 24 | Methodist | English | Ontario | No Occupation Listed | 238 |
| 19 | ogden | mary | F | 2 | Methodist | English | Ontario | No Occupation Listed | 238 |
| 18 | ogden | may | F | 6 | Anglican | English | Ontario | No Occupation Listed | 11 |
| 19 | ogden | ottom | M | 3 | Anglican | English | Ontario | No Occupation Listed | 11 |
| 14 | ogden | permelia | F | 14 | Anglican | English | Ontario | No Occupation Listed | 11 |
| 17 | ogden | sidney | F | 54 | Methodist | Irish | Ireland | No Occupation Listed | 238 |
| 22 | oleary | dennis | M | 15 | Roman Catholic | Irish | Ireland | No Occupation Listed | 59 |
| 18 | oleary | ellen | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 59 |
| 17 | oleary | george | M | 58 | Roman Catholic | Irish | Ireland | Labourers nfs | 59 |
| 20 | oleary | jane | F | 18 | Roman Catholic | Irish | Ireland | No Occupation Listed | 59 |
| 19 | oleary | john | M | 21 | Roman Catholic | Irish | Ireland | Labourers nfs | 59 |
| 21 | oleary | mary | F | 16 | Roman Catholic | Irish | Ireland | No Occupation Listed | 59 |
| 16 | oneil | brion | M | 26 | Roman Catholic | Irish | Ontario | Clerks in hotels and other receptions | 133 |
| 12 | oneil | cornelius | M | 29 | Roman Catholic | Irish | Ontario | Blacksmiths | 40 |
| 5 | oneil | john | M | 38 | Roman Catholic | Irish | Ireland | Labourers nfs | 39 |
| 9 | oneil | john | M | 0 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 8 | oneil | joseph | M | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 6 | oneil | mary | F | 28 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 14 | oneil | mary | F | 26 | Roman Catholic | Irish | Ontario | No Occupation Listed | 133 |
| 15 | oneil | mary | F | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 133 |
| 7 | oneil | patrick | M | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 39 |
| 14 | oneil | patrick | M | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 40 |
| 13 | oneil | philemon | F | 20 | Roman Catholic | French | Quebec | No Occupation Listed | 40 |
| 13 | oneil | terrence | M | 31 | Roman Catholic | Irish | Ontario | Hotel Keepers and Managers | 133 |
| 6 | ostrander | albert | M | 16 | Roman Catholic | German | Ontario | No Occupation Listed | 116 |
| 7 | ostrander | cecilia | F | 14 | Roman Catholic | German | Ontario | No Occupation Listed | 116 |
| 8 | ostrander | elias | M | 12 | Roman Catholic | German | Ontario | No Occupation Listed | 116 |
| 2 | ostrander | mary | F | 49 | Roman Catholic | Irish | Ontario | No Occupation Listed | 116 |
| 3 | ostrander | mary | F | 19 | Roman Catholic | German | Ontario | Seamstress | 116 |
| 4 | ostrander | stephen | M | 18 | Roman Catholic | German | Ontario | No Occupation Listed | 116 |
| 1 | ostrander | thomas | M | 50 | Anglican | German | Ontario | No Occupation Listed | 116 |
| 5 | ostrander | thomas | M | 16 | Roman Catholic | German | Ontario | No Occupation Listed | 116 |