Residents of Québec, Palais, Ward—Quartier — Sub-district E, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 10 | obrien | helen | F | 50 | Roman Catholic | Irish | Ireland | No Occupation Listed | 169 |
| 11 | obrien | helen | F | 16 | Roman Catholic | Irish | Quebec | No Occupation Listed | 169 |
| 1 | obrien | helene | F | 44 | Roman Catholic | Irish | Ireland | Servants nfs | 72 |
| 12 | obrien | james | M | 20 | Roman Catholic | Irish | Quebec | Day labourers (e.g journalier) | 169 |
| 9 | obrien | john | M | 55 | Roman Catholic | Irish | Ireland | Messengers | 169 |
| 24 | obrien | sarah | F | 75 | Roman Catholic | Irish | Ireland | No Occupation Listed | 84 |
| 10 | odooyer | marianne | F | 30 | Roman Catholic | Irish | Ireland | No Occupation Listed | 23 |
| 14 | ofarrell | agnes | F | 3 | Roman Catholic | Irish | Quebec | No Occupation Listed | 123 |
| 10 | ofarrell | carol | F | 14 | Roman Catholic | Irish | Quebec | No Occupation Listed | 123 |
| 13 | ofarrell | finb | M | 7 | Roman Catholic | Irish | Quebec | No Occupation Listed | 123 |
| 11 | ofarrell | geo | M | 17 | Roman Catholic | Irish | Quebec | Clerk, nfs | 123 |
| 12 | ofarrell | harry | M | 10 | Roman Catholic | Irish | Quebec | No Occupation Listed | 123 |
| 8 | ofarrell | john | M | 51 | Roman Catholic | Irish | Quebec | lawyer | 123 |
| 9 | ofarrell | mary | F | 43 | Roman Catholic | Irish | Quebec | No Occupation Listed | 123 |
| 22 | oleary | p | M | 27 | Roman Catholic | Irish | Quebec | Ministers of Religion | 267 |
| 11 | oliver | m | F | 32 | Congregationalist | English | England | No Occupation Listed | 144 |
| 10 | oliver | t | M | 35 | Congregationalist | Irish | Quebec | lawyer | 144 |
| 23 | olscamp | adele | F | 54 | Roman Catholic | German | Quebec | No Occupation Listed | 136 |
| 12 | omcara | dominique | M | 40 | Roman Catholic | Irish | Quebec | lawyer | 134 |
| 14 | omcara | dominique | M | 1 | Roman Catholic | Irish | Quebec | No Occupation Listed | 134 |
| 16 | omcara | john | M | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 134 |
| 18 | omcara | josephine | F | 50 | Roman Catholic | Irish | Quebec | No Occupation Listed | 134 |
| 19 | omcara | lesey | F | 26 | Roman Catholic | Irish | Quebec | No Occupation Listed | 134 |
| 13 | omcara | mariane | F | 24 | Roman Catholic | Irish | Quebec | No Occupation Listed | 134 |
| 17 | omcara | mary | F | 40 | Roman Catholic | Irish | Quebec | No Occupation Listed | 134 |
| 15 | omcara | w | M | 3 | Roman Catholic | Irish | Quebec | No Occupation Listed | 134 |
| 14 | oregan | charles | M | 12 | Anglican | Irish | Quebec | No Occupation Listed | 101 |
| 12 | oregan | emilie | F | 22 | Anglican | Irish | Quebec | No Occupation Listed | 101 |
| 16 | oregan | james | M | 7 | Anglican | Irish | Quebec | No Occupation Listed | 101 |
| 15 | oregan | john | M | 8 | Anglican | Irish | Quebec | No Occupation Listed | 101 |
| 3 | oregan | kate | F | 21 | Roman Catholic | Irish | Quebec | No Occupation Listed | 159 |
| 11 | oregan | marguerite | F | 40 | Anglican | Irish | Ireland | No Occupation Listed | 101 |
| 1 | oregan | marguerite | F | 40 | Roman Catholic | Irish | Ireland | No Occupation Listed | 159 |
| 2 | oregan | mary | F | 22 | Roman Catholic | Irish | Ireland | No Occupation Listed | 159 |
| 10 | oregan | patrick | M | 51 | Anglican | Irish | Ireland | Glass bottle makers | 101 |
| 25 | oregan | peter | M | 46 | Roman Catholic | Irish | Ireland | Livestock farmers | 159 |
| 13 | oregan | robert | M | 18 | Anglican | Irish | Quebec | Clerk, nfs | 101 |
| 17 | oreiley | anny | F | 22 | Roman Catholic | Irish | Quebec | No Occupation Listed | 139 |
| 16 | oreiley | catherine | F | 15 | Roman Catholic | Irish | Quebec | No Occupation Listed | 139 |
| 15 | oreiley | catherine | F | 20 | Roman Catholic | Irish | Quebec | Servants nfs | 146 |
| 15 | oreiley | edouard | M | 12 | Roman Catholic | Irish | Quebec | No Occupation Listed | 139 |
| 13 | oreiley | francois | M | 60 | Roman Catholic | Irish | Ireland | Caretakers and janitors | 139 |
| 14 | oreiley | james | M | 20 | Roman Catholic | Irish | Quebec | Tinsmiths and Tinners and Tinkers | 139 |
| 9 | oreilly | m | F | 33 | Roman Catholic | Irish | Quebec | No Occupation Listed | 182 |
| 8 | oreilly | mary | F | 22 | Roman Catholic | Irish | Quebec | Servants nfs | 27 |
| 8 | orkney | alexander | M | 81 | Presbyterian | Scottish | Quebec | Livestock farmers | 133 |
| 10 | orkney | helen | F | 48 | Presbyterian | Scottish | Quebec | No Occupation Listed | 133 |
| 20 | orum | arthur | M | 0 | Anglican | Irish | Quebec | No Occupation Listed | 174 |
| 18 | orum | esther | F | 7 | Anglican | Irish | Quebec | No Occupation Listed | 174 |
| 19 | orum | harcourt | M | 4 | Anglican | Irish | Quebec | No Occupation Listed | 174 |
| 17 | orum | lorne | M | 9 | Anglican | Irish | Quebec | No Occupation Listed | 174 |
| 16 | orum | rachel | F | 31 | Anglican | Irish | Ireland | No Occupation Listed | 174 |
| 15 | orum | s | M | 40 | Anglican | Irish | Quebec | Dealer, merchant etc. (Wholesale & retail trade) | 174 |
| 16 | otis | philomene | F | 28 | Roman Catholic | French | Quebec | Servants nfs | 126 |
| 25 | ouellet | obeline | F | 18 | Roman Catholic | French | Quebec | Servants nfs | 185 |
| 22 | ouellette | gaudeli | F | 17 | Roman Catholic | French | Quebec | Servants nfs | 56 |
| 25 | ouellette | rose | F | 26 | Roman Catholic | French | Quebec | Servants nfs | 120 |
| 23 | ouimet | o | F | 68 | Roman Catholic | French | Quebec | Members of religious orders | 84 |