Residents of Lancaster — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 8 | obrian | annie | F | 25 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 104 |
| 21 | obrian | thomas | M | 43 | Roman Catholic | Irish | New Brunswick | Bookkeepers nfs | 129 |
| 17 | obrien | catharina | F | 35 | Roman Catholic | Irish | Ireland | No Occupation Listed | 124 |
| 22 | obrien | cornelius | M | 68 | Roman Catholic | Irish | Ireland | No Occupation Listed | 42 |
| 23 | obrien | daniel | M | 13 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 160 |
| 25 | obrien | frederick | M | 4 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 160 |
| 1 | obrien | james | M | 17 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 42 |
| 11 | obrien | john | M | 40 | Roman Catholic | Irish | New Brunswick | Engineers (US) nfs | 124 |
| 14 | obrien | john | M | 5 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 124 |
| 21 | obrien | john | M | 21 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 160 |
| 15 | obrien | joseph | M | 2 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 124 |
| 24 | obrien | joseph | M | 24 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 42 |
| 1 | obrien | lillie | F | 2 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 160 |
| 12 | obrien | margaret | F | 32 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 124 |
| 24 | obrien | margrett | F | 16 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 160 |
| 13 | obrien | mary | F | 9 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 124 |
| 23 | obrien | mary | F | 57 | Roman Catholic | Irish | Ireland | No Occupation Listed | 42 |
| 25 | obrien | michael | M | 20 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 42 |
| 22 | obrien | michael | M | 17 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 160 |
| 19 | obrien | patrick | M | 45 | Roman Catholic | Irish | Ireland | No Occupation Listed | 160 |
| 20 | obrien | sarah | F | 41 | Roman Catholic | Irish | Ireland | No Occupation Listed | 160 |
| 16 | obrien | terrance | M | 65 | Roman Catholic | Irish | Ireland | Labourers nfs | 124 |
| 18 | obrien | terressa | F | 0 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 124 |
| 20 | obrion | peter | M | 45 | Roman Catholic | Irish | New Brunswick | Dealer, merchant etc. (Wholesale & retail trade) | 129 |
| 10 | oconnell | ellen | F | 26 | Roman Catholic | German | Nova Scotia | No Occupation Listed | 69 |
| 21 | oconnell | jeffery | M | 57 | Anglican | Irish | New Brunswick | No Occupation Listed | 150 |
| 24 | oconnell | jeremiah | M | 76 | Roman Catholic | Irish | Ireland | No Occupation Listed | 53 |
| 25 | oconnell | joanna | F | 79 | Roman Catholic | Irish | Ireland | No Occupation Listed | 53 |
| 20 | oconnor | bridget | F | 3 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 102 |
| 14 | oconnor | denis | M | 23 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 102 |
| 13 | oconnor | edward | M | 25 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 102 |
| 18 | oconnor | james | M | 8 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 102 |
| 19 | oconnor | john | M | 5 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 102 |
| 17 | oconnor | joseph | M | 11 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 102 |
| 11 | oconnor | margret | F | 39 | Roman Catholic | Scottish | Nova Scotia | No Occupation Listed | 102 |
| 21 | oconnor | mary | F | 14 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 102 |
| 15 | oconnor | peter | M | 21 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 102 |
| 10 | oconnor | philip | M | 72 | Roman Catholic | Irish | Ireland | No Occupation Listed | 102 |
| 12 | oconnor | philip | M | 27 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 102 |
| 16 | oconnor | william | M | 19 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 102 |
| 4 | odonnel | bridget | F | 24 | Roman Catholic | Irish | New Brunswick | Domestic and House Servants | 194 |
| 4 | ogden | benjamin | M | 23 | Anglican | English | New Brunswick | No Occupation Listed | 161 |
| 11 | ogden | burton | M | 1 | Anglican | English | New Brunswick | No Occupation Listed | 161 |
| 3 | ogden | elizabeth | F | 45 | Anglican | English | New Brunswick | No Occupation Listed | 161 |
| 7 | ogden | ellen | F | 15 | Anglican | English | New Brunswick | No Occupation Listed | 161 |
| 10 | ogden | ethel | F | 1 | Anglican | English | New Brunswick | No Occupation Listed | 161 |
| 9 | ogden | gertrude | F | 5 | Anglican | English | New Brunswick | No Occupation Listed | 161 |
| 6 | ogden | john | M | 17 | Anglican | English | New Brunswick | No Occupation Listed | 161 |
| 5 | ogden | martha | F | 20 | Anglican | English | New Brunswick | No Occupation Listed | 161 |
| 8 | ogden | mina | F | 9 | Anglican | English | New Brunswick | No Occupation Listed | 161 |
| 2 | ogden | william | M | 51 | Anglican | English | New Brunswick | No Occupation Listed | 161 |
| 22 | oive | rebecca | F | 54 | Anglican | German | New Brunswick | No Occupation Listed | 83 |
| 21 | oive | william | M | 57 | Anglican | English | New Brunswick | Joiners | 83 |
| 2 | ol_e | edith | F | 0 | Anglican | English | New Brunswick | No Occupation Listed | 198 |
| 20 | ol_e | eliza | F | 38 | Anglican | English | New Brunswick | No Occupation Listed | 198 |
| 23 | ol_e | ella | F | 13 | Anglican | English | New Brunswick | No Occupation Listed | 198 |
| 25 | ol_e | george | M | 7 | Anglican | English | New Brunswick | No Occupation Listed | 198 |
| 22 | ol_e | harriet | F | 15 | Anglican | English | New Brunswick | No Occupation Listed | 198 |
| 3 | ol_e | james | M | 81 | Anglican | English | New Brunswick | No Occupation Listed | 198 |
| 21 | ol_e | jessie | F | 17 | Anglican | English | New Brunswick | No Occupation Listed | 198 |
| 19 | ol_e | thomas | M | 40 | Anglican | English | New Brunswick | Farmers, general and nfs | 198 |
| 1 | ol_e | walter | M | 2 | Anglican | English | New Brunswick | No Occupation Listed | 198 |
| 24 | ol_e | william | M | 9 | Anglican | English | New Brunswick | No Occupation Listed | 198 |
| 25 | olive | allen | M | 22 | Methodist | English | New Brunswick | Joiners | 83 |
| 21 | olive | david | M | 27 | Presbyterian | English | New Brunswick | Clerk, nfs | 62 |
| 1 | olive | eliza | F | 20 | Methodist | English | New Brunswick | No Occupation Listed | 83 |
| 1 | olive | ellen | F | 2 | Presbyterian | English | New Brunswick | No Occupation Listed | 62 |
| 23 | olive | ephaim | M | 8 | Presbyterian | English | New Brunswick | No Occupation Listed | 62 |
| 3 | olive | fenwick | M | 16 | Methodist | English | New Brunswick | Joiners | 83 |
| 18 | olive | james | M | 64 | Methodist | English | New Brunswick | brit. court commissioner | 177 |
| 25 | olive | joshua | M | 4 | Presbyterian | English | New Brunswick | No Occupation Listed | 62 |
| 24 | olive | lizzie | F | 6 | Presbyterian | English | New Brunswick | No Occupation Listed | 62 |
| 22 | olive | mary | F | 28 | Presbyterian | Irish | New Brunswick | No Occupation Listed | 62 |
| 19 | olive | mary | F | 63 | Methodist | English | Nova Scotia | No Occupation Listed | 177 |
| 4 | olive | minnie | F | 12 | Methodist | English | New Brunswick | No Occupation Listed | 83 |
| 2 | olive | samuel | M | 18 | Methodist | English | New Brunswick | Joiners | 83 |
| 24 | oneal | james | M | 19 | Roman Catholic | Irish | New Brunswick | Clerk, nfs | 201 |
| 23 | oneal | john | M | 28 | Roman Catholic | Irish | New Brunswick | Factory labourers (non-specified manufacturing) | 201 |
| 10 | oneil | lawrence | M | 18 | Roman Catholic | Irish | New Brunswick | Factory labourers (non-specified manufacturing) | 96 |
| 11 | oneil | lewis | M | 11 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 96 |
| 9 | oneil | mary | F | 50 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 96 |
| 12 | oneil | mary | F | 9 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 96 |
| 8 | oneil | patrick | F | 63 | Roman Catholic | Irish | Ireland | Factory labourers (non-specified manufacturing) | 96 |
| 24 | oragan | ellen | F | 30 | Roman Catholic | Irish | Ireland | No Occupation Listed | 214 |
| 25 | oragan | mary | F | 12 | Roman Catholic | Irish | Ireland | No Occupation Listed | 214 |
| 23 | oragan | morgan | M | 45 | Roman Catholic | Irish | Ireland | Factory labourers (non-specified manufacturing) | 214 |
| 25 | oriley | chas | M | 13 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 41 |
| 3 | oriley | eleanor | F | 5 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 41 |
| 24 | oriley | frances | F | 36 | Roman Catholic | English | New Brunswick | No Occupation Listed | 41 |
| 4 | oriley | francis | M | 3 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 41 |
| 2 | oriley | george | M | 8 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 41 |
| 5 | oriley | julia | F | 1 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 41 |
| 18 | oriley | margaret | F | 66 | Roman Catholic | Irish | Ireland | No Occupation Listed | 27 |
| 23 | oriley | thomas | M | 46 | Roman Catholic | Irish | Ireland | Teachers (unspecified) | 41 |
| 1 | oriley | thomas | M | 11 | Roman Catholic | Irish | New Brunswick | No Occupation Listed | 41 |
| 22 | oveal | mary | F | 54 | Roman Catholic | Irish | Ireland | No Occupation Listed | 201 |