Residents of Eramosa — Sub-district D, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 25 | oakes | anne | F | 3 | Anglican | English | Ontario | No Occupation Listed | 96 |
| 1 | oakes | anne | F | 10 | Episcopal Methodist | English | Ontario | No Occupation Listed | 180 |
| 21 | oakes | charles | M | 14 | Anglican | English | Ontario | Farmers, general and nfs | 103 |
| 3 | oakes | darmer | F | 45 | Anglican | Irish | — | No Occupation Listed | 97 |
| 23 | oakes | elisa | F | 9 | Anglican | English | Ontario | No Occupation Listed | 103 |
| 24 | oakes | elisabeth | F | 45 | Episcopal Methodist | Scottish | Scotland | No Occupation Listed | 180 |
| 2 | oakes | elisabeth | F | 8 | Episcopal Methodist | English | Ontario | No Occupation Listed | 180 |
| 17 | oakes | emma | F | 51 | Anglican | English | Ontario | No Occupation Listed | 103 |
| 22 | oakes | george | M | 26 | Anglican | English | Ontario | Labourers nfs | 96 |
| 6 | oakes | harriet | F | 10 | Anglican | English | — | No Occupation Listed | 97 |
| 5 | oakes | helen | F | 17 | Anglican | English | — | No Occupation Listed | 97 |
| 20 | oakes | henry | M | 17 | Anglican | English | Ontario | Farmers, general and nfs | 103 |
| 24 | oakes | james | M | 6 | Anglican | English | Ontario | No Occupation Listed | 96 |
| 2 | oakes | james | M | 50 | Anglican | English | England | Hotel Keepers and Managers | 97 |
| 7 | oakes | james | M | 8 | Anglican | English | — | No Occupation Listed | 97 |
| 19 | oakes | james | M | 21 | Anglican | English | Ontario | Farmers, general and nfs | 103 |
| 23 | oakes | john | M | 52 | Episcopal Methodist | English | England | Labourers nfs | 180 |
| 16 | oakes | jonathan | M | 62 | Anglican | English | England | Farmers, general and nfs | 103 |
| 16 | oakes | joseph | M | 15 | Methodist | English | Ontario | Servants nfs | 140 |
| 18 | oakes | lydia | F | 23 | Anglican | English | Ontario | No Occupation Listed | 103 |
| 23 | oakes | mary | F | 24 | Anglican | English | Ontario | No Occupation Listed | 96 |
| 25 | oakes | sophia | F | 12 | Episcopal Methodist | English | Ontario | No Occupation Listed | 180 |
| 22 | oakes | susan | F | 11 | Anglican | English | Ontario | No Occupation Listed | 103 |
| 1 | oakes | william | M | 2 | Anglican | English | Ontario | No Occupation Listed | 96 |
| 4 | oakes | william | M | 20 | Anglican | English | — | No Occupation Listed | 97 |
| 15 | oboyles | bridget | F | 61 | Roman Catholic | Irish | Ireland | No Occupation Listed | 23 |
| 23 | oboyles | bridget | F | 23 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 21 | oboyles | catherine | F | 56 | Roman Catholic | Irish | Ireland | No Occupation Listed | 28 |
| 24 | oboyles | euphamia | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 19 | oboyles | francis | M | 26 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 28 |
| 22 | oboyles | helen | F | 27 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 18 | oboyles | james | M | 25 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 23 |
| 16 | oboyles | john | M | 27 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 23 |
| 20 | oboyles | mary | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 28 |
| 20 | oboyles | michael | M | 19 | Roman Catholic | Irish | Ontario | No Occupation Listed | 23 |
| 19 | oboyles | owen | M | 23 | Roman Catholic | Irish | Ontario | Teachers (unspecified) | 23 |
| 14 | oboyles | patrick | M | 70 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 23 |
| 17 | oboyles | patrick | M | 30 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 23 |
| 13 | obrian | bridget | F | 70 | Roman Catholic | Irish | Ireland | No Occupation Listed | 166 |
| 3 | obrian | catherine | F | 66 | Roman Catholic | Irish | Ireland | No Occupation Listed | 116 |
| 14 | obrian | david | M | 45 | Roman Catholic | Irish | Ireland | Labourers nfs | 166 |
| 19 | obrian | david | M | 16 | Presbyterian | Irish | Ontario | Farmers, general and nfs | 167 |
| 18 | obrian | elisab | F | 18 | Presbyterian | Irish | Ontario | No Occupation Listed | 167 |
| 6 | obrian | elisabeth | F | 25 | Roman Catholic | Irish | Ontario | No Occupation Listed | 116 |
| 7 | obrian | henry | M | 23 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 116 |
| 17 | obrian | janet | F | 20 | Presbyterian | Irish | Ontario | No Occupation Listed | 167 |
| 5 | obrian | margaret | F | 27 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 116 |
| 16 | obrian | morgan | F | 41 | Presbyterian | English | Ontario | No Occupation Listed | 167 |
| 4 | obrian | simon | M | 32 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 116 |
| 2 | obrian | william | M | 64 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 116 |
| 20 | obrian | william | M | 11 | Presbyterian | Irish | Ontario | No Occupation Listed | 167 |
| 7 | obrien | emma | F | 23 | Roman Catholic | Irish | Ontario | No Occupation Listed | 18 |
| 17 | obrien | harriet | F | 56 | Methodist | English | Nova Scotia | Seamstress | 146 |
| 6 | obrien | james | M | 29 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 18 |
| 5 | obrien | mary | F | 68 | Roman Catholic | Irish | Ireland | No Occupation Listed | 18 |
| 4 | obrien | simon | M | 71 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 18 |
| 3 | oconnor | agnes | F | 6 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 2 | oconnor | anne | F | 7 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 14 | oconnor | bridget | F | 43 | Roman Catholic | Irish | Ireland | No Occupation Listed | 109 |
| 4 | oconnor | bridget | F | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 19 | oconnor | catherine | F | 15 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 6 | oconnor | cecelia | F | 2 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 22 | oconnor | daniel | M | 11 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 24 | oconnor | elisab | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 17 | oconnor | ellen | F | 18 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 23 | oconnor | hanna | F | 10 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 25 | oconnor | jeramiah | M | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 15 | oconnor | john | M | 22 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 109 |
| 5 | oconnor | julia | F | 4 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 1 | oconnor | lucy | F | 8 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 21 | oconnor | marg | F | 12 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 16 | oconnor | mary | F | 20 | Roman Catholic | Irish | Ontario | No Occupation Listed | 109 |
| 13 | oconnor | michel | M | 48 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 109 |
| 18 | oconnor | michel | M | 16 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 109 |
| 20 | oconnor | william | M | 14 | Roman Catholic | Irish | Ontario | Farmers, general and nfs | 109 |
| 17 | odonell | elizabeth | F | 30 | Roman Catholic | Irish | Ontario | No Occupation Listed | 208 |
| 20 | odonell | elizabeth | F | 3 | Roman Catholic | Irish | Ontario | No Occupation Listed | 208 |
| 21 | odonell | francis | M | 1 | Roman Catholic | Irish | Ontario | No Occupation Listed | 208 |
| 16 | odonell | john | M | 35 | Roman Catholic | Irish | Nova Scotia | Farmers, general and nfs | 208 |
| 19 | odonell | louisa | F | 5 | Roman Catholic | Irish | Ontario | No Occupation Listed | 208 |
| 18 | odonell | mary | F | 9 | Roman Catholic | Irish | Ontario | No Occupation Listed | 208 |
| 23 | oliphaut | ann | F | 63 | Disciple of Christ | Scottish | Scotland | No Occupation Listed | 200 |
| 2 | oliver | robert | M | 18 | Episcopal Methodist | Irish | Ontario | Labourers nfs | 211 |
| 25 | oreal | william | M | 14 | Roman Catholic | Irish | Ontario | No Occupation Listed | 84 |
| 6 | orme | isabella | F | 48 | Reformed Presbyterian | Scottish | Scotland | No Occupation Listed | 121 |
| 24 | orme | jennet | F | 21 | Presbyterian | Scottish | Ontario | Dressmakers | 27 |
| 21 | orme | john | M | 65 | Congregationalist | Scottish | Scotland | Boot and shoemakers and repairers | 27 |
| 23 | orme | maggie | F | 23 | Presbyterian | Scottish | Ontario | No Occupation Listed | 27 |
| 5 | orme | margret | F | 50 | Reformed Presbyterian | Scottish | Scotland | No Occupation Listed | 121 |
| 22 | orme | peter | M | 25 | Presbyterian | Scottish | Ontario | Stone masons | 27 |
| 23 | orr | bertha | F | 8 | Disciple of Christ | English | Ontario | No Occupation Listed | 176 |
| 5 | orr | fredrick | M | 1 | Reformed Presbyterian | Irish | Ontario | No Occupation Listed | 184 |
| 1 | orr | isaac | M | 32 | Reformed Presbyterian | Irish | Ontario | Coopers etc. | 184 |
| 4 | orr | james | M | 3 | Reformed Presbyterian | Irish | Ontario | No Occupation Listed | 184 |
| 24 | orr | kate | F | 6 | Disciple of Christ | English | Ontario | No Occupation Listed | 176 |
| 25 | orr | louis | M | 4 | Disciple of Christ | English | Ontario | No Occupation Listed | 176 |
| 16 | orr | marie | F | 30 | Wesleyan Methodist | Irish | Ontario | Servants nfs | 74 |
| 21 | orr | mary | F | 35 | Disciple of Christ | English | Ontario | No Occupation Listed | 176 |
| 22 | orr | minnie | F | 10 | Disciple of Christ | English | Ontario | No Occupation Listed | 176 |
| 17 | orr | sarah | F | 17 | Wesleyan Methodist | Irish | Ontario | Servants nfs | 74 |
| 2 | orr | susanah | F | 24 | Reformed Presbyterian | Irish | Ireland | No Occupation Listed | 184 |
| 3 | orr | william | M | 6 | Reformed Presbyterian | Irish | Ontario | No Occupation Listed | 184 |
| 17 | osborn | abraham | M | 60 | Episcopal Methodist | Dutch | Ontario | Farmers, general and nfs | 94 |
| 18 | osborn | donabella | F | 62 | Episcopal Methodist | English | England | No Occupation Listed | 94 |
| 20 | osborn | george | M | 1 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 171 |
| 21 | osborn | jane | F | 32 | Episcopal Methodist | English | England | No Occupation Listed | 94 |
| 16 | osborn | jane | F | 39 | Episcopal Methodist | Irish | Ontario | No Occupation Listed | 171 |
| 20 | osborn | john | M | 32 | Episcopal Methodist | Dutch | Ontario | Farmers, general and nfs | 94 |
| 17 | osborn | john | M | 10 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 171 |
| 19 | osborn | malysa | F | 8 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 94 |
| 19 | osborn | mary | F | 4 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 171 |
| 24 | osborn | mary | F | | Episcopal Methodist | Irish | Ontario | Glove Makers and related workers | 210 |
| 15 | osborn | william | M | 35 | Episcopal Methodist | Dutch | Ontario | Factory labourers (non-specified manufacturing) | 171 |
| 18 | osborn | william | M | 6 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 171 |
| 19 | ostrander | careline | F | 30 | Episcopal Methodist | Dutch | United States | No Occupation Listed | 43 |
| 21 | ostrander | cathurn | F | 2 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 43 |
| 20 | ostrander | matthew | M | 6 | Episcopal Methodist | Dutch | Ontario | No Occupation Listed | 43 |
| 18 | ostrander | sylvester | M | 30 | Episcopal Methodist | Dutch | Ontario | Farmers, general and nfs | 43 |
| 9 | ostruder | margaret | F | 1 | Episcopal Methodist | German | United States | No Occupation Listed | 124 |