Residents of Godmanchester — Sub-district F, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 12 | oconnor | andrew | M | 32 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 323 |
| 21 | oconnor | bridget | F | 20 | Roman Catholic | Irish | Quebec | No Occupation Listed | 324 |
| 20 | oconnor | bryan | M | 16 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 285 |
| 11 | oconnor | catharine | F | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 301 |
| 13 | oconnor | catherine | F | 56 | Roman Catholic | Irish | Ireland | Female farmer | 285 |
| 15 | oconnor | dennis | M | 1 | Roman Catholic | Irish | Quebec | No Occupation Listed | 323 |
| 16 | oconnor | dennis | M | 77 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 324 |
| 10 | oconnor | ellen | F | 6 | Roman Catholic | Irish | Quebec | No Occupation Listed | 301 |
| 18 | oconnor | johanna | F | 17 | Roman Catholic | Irish | Quebec | No Occupation Listed | 285 |
| 14 | oconnor | johanna | F | 0 | Roman Catholic | Irish | Quebec | No Occupation Listed | 301 |
| 17 | oconnor | johanna | F | 57 | Roman Catholic | Irish | Ireland | No Occupation Listed | 324 |
| 20 | oconnor | johanna | F | 24 | Roman Catholic | Irish | Quebec | No Occupation Listed | 324 |
| 22 | oconnor | john | M | 27 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 285 |
| 16 | oconnor | joseph | M | 22 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 285 |
| 19 | oconnor | katharine | F | 30 | Roman Catholic | Irish | Quebec | No Occupation Listed | 324 |
| 21 | oconnor | margaret | F | 28 | Roman Catholic | Irish | Quebec | No Occupation Listed | 285 |
| 13 | oconnor | margaret | F | 2 | Roman Catholic | Irish | Quebec | No Occupation Listed | 301 |
| 17 | oconnor | martin | M | 20 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 285 |
| 8 | oconnor | mary | F | 35 | Roman Catholic | Irish | Quebec | No Occupation Listed | 301 |
| 13 | oconnor | mary | F | 32 | Roman Catholic | Irish | Quebec | No Occupation Listed | 323 |
| 14 | oconnor | mary | M | 3 | Roman Catholic | Irish | Quebec | No Occupation Listed | 323 |
| 14 | oconnor | maurice | M | 33 | Roman Catholic | Irish | Quebec | Miners | 285 |
| 9 | oconnor | michael | M | 8 | Roman Catholic | Irish | Quebec | No Occupation Listed | 301 |
| 15 | oconnor | patrick | M | 25 | Roman Catholic | Irish | Quebec | Miners | 285 |
| 18 | oconnor | patrick | M | 30 | Roman Catholic | Irish | Quebec | Miners | 324 |
| 19 | oconnor | richard | M | 16 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 285 |
| 7 | oconnor | thomas | M | 35 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 301 |
| 12 | oconnor | thomas | M | 4 | Roman Catholic | Irish | Quebec | No Occupation Listed | 301 |
| 22 | ohaire | catharine | F | 21 | Roman Catholic | Irish | Quebec | No Occupation Listed | 321 |
| 1 | ohaire | dennis | M | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 321 |
| 21 | ohaire | ellen | F | 22 | Roman Catholic | Irish | Quebec | No Occupation Listed | 321 |
| 25 | ohaire | frank | M | 3 | Roman Catholic | Irish | Quebec | No Occupation Listed | 321 |
| 19 | ohaire | johanna | F | 55 | Roman Catholic | Irish | Ireland | No Occupation Listed | 321 |
| 23 | ohaire | johanna | F | 19 | Roman Catholic | Irish | Quebec | No Occupation Listed | 321 |
| 24 | ohaire | margaret | F | 17 | Roman Catholic | Irish | Quebec | No Occupation Listed | 321 |
| 20 | ohaire | mary | F | 24 | Roman Catholic | Irish | Quebec | No Occupation Listed | 321 |
| 18 | ohaire | patrick | M | 65 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 321 |
| 16 | oliver | sarah | F | 62 | Church of Scotland | Irish | Ireland | No Occupation Listed | 75 |
| 22 | olmstead | alfred | M | 24 | Church of Scotland | Scottish | United States | river drivers | 209 |
| 24 | olmstead | annie | F | 18 | Church of Scotland | Scottish | United States | No Occupation Listed | 209 |
| 25 | olmstead | jane | F | 15 | Church of Scotland | Scottish | United States | No Occupation Listed | 209 |
| 23 | olmstead | oliver | M | 23 | Church of Scotland | Scottish | United States | No Occupation Listed | 209 |
| 21 | olstead | salmi | F | 53 | Church of Scotland | Scottish | United States | No Occupation Listed | 209 |
| 14 | oniel | thomas | M | 48 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 217 |
| 11 | oreilly | alice | F | 37 | Roman Catholic | Irish | Quebec | No Occupation Listed | 184 |
| 13 | oreilly | ann | F | 66 | Roman Catholic | Irish | Quebec | No Occupation Listed | 184 |
| 16 | oreilly | bridget | F | 11 | Roman Catholic | Irish | Quebec | No Occupation Listed | 175 |
| 2 | oreilly | catharine | F | 21 | Roman Catholic | Irish | Quebec | No Occupation Listed | 173 |
| 15 | oreilly | charles | M | 13 | Roman Catholic | Irish | Quebec | No Occupation Listed | 175 |
| 9 | oreilly | charles | M | 31 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 184 |
| 4 | oreilly | elizabeth | F | 48 | Roman Catholic | Irish | Quebec | No Occupation Listed | 173 |
| 3 | oreilly | ella | F | 19 | Roman Catholic | Irish | Quebec | No Occupation Listed | 173 |
| 17 | oreilly | francis | M | 9 | Roman Catholic | Irish | Quebec | No Occupation Listed | 175 |
| 18 | oreilly | frederick | M | 7 | Roman Catholic | Irish | Quebec | No Occupation Listed | 175 |
| 11 | oreilly | henry | M | 45 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 175 |
| 19 | oreilly | james | M | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 175 |
| 20 | oreilly | margaret | F | 2 | Roman Catholic | Irish | Quebec | No Occupation Listed | 175 |
| 12 | oreilly | maria | F | 35 | Roman Catholic | Irish | Quebec | No Occupation Listed | 184 |
| 12 | oreilly | mary | F | 40 | Roman Catholic | Irish | Quebec | No Occupation Listed | 175 |
| 23 | oreilly | mary | F | 45 | Roman Catholic | Irish | Ireland | No Occupation Listed | 176 |
| 22 | oreilly | patrick | M | 80 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 176 |
| 14 | oreilly | thomas | M | 13 | Roman Catholic | Irish | Quebec | No Occupation Listed | 175 |
| 1 | oreilly | william | M | 60 | Roman Catholic | Irish | United States | Farmers, general and nfs | 173 |
| 13 | oreilly | william | M | 15 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 175 |
| 21 | oreilly | william | M | 87 | Roman Catholic | Irish | Ireland | No Occupation Listed | 175 |
| 10 | oreilly | william | M | 31 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 184 |