Residents of Québec, St. Pierre, Ward—Quartier — Sub-district J, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 10 | obert | sarah | F | 27 | Roman Catholic | French | Quebec | Servants nfs | 100 |
| 20 | obertint | alphonse | M | 17 | Roman Catholic | French | Quebec | Labourers nfs | 110 |
| 20 | obrien | john | M | 31 | Roman Catholic | French | Quebec | No Occupation Listed | 165 |
| 21 | obrien | mary | F | 28 | Roman Catholic | French | Quebec | No Occupation Listed | 165 |
| 19 | oconnell | agnes | F | 10 | Roman Catholic | Irish | Quebec | No Occupation Listed | 45 |
| 15 | oconnell | annie | F | 18 | Roman Catholic | Irish | Quebec | No Occupation Listed | 45 |
| 18 | oconnell | daniel | M | 14 | Roman Catholic | Irish | Quebec | No Occupation Listed | 45 |
| 13 | oconnell | elizabeth | F | 50 | Roman Catholic | Irish | Quebec | No Occupation Listed | 45 |
| 17 | oconnell | joseph | M | 15 | Roman Catholic | Irish | Quebec | No Occupation Listed | 45 |
| 14 | oconnell | mary | F | 22 | Roman Catholic | Irish | Quebec | No Occupation Listed | 45 |
| 16 | oconnell | sarah | F | 17 | Roman Catholic | Irish | Quebec | No Occupation Listed | 45 |
| 20 | oconnell | william | M | 8 | Roman Catholic | Irish | Quebec | No Occupation Listed | 45 |
| 24 | oconnor | henry | M | 60 | Roman Catholic | Irish | Ireland | Dealer, merchant etc. (Wholesale & retail trade) | 89 |
| 3 | odonnahue | annie | F | 27 | Roman Catholic | Irish | Quebec | No Occupation Listed | 90 |
| 1 | odonnahue | john | M | 38 | Roman Catholic | Irish | Ireland | Watch and Clock Makers | 89 |
| 2 | odonnahue | winnifred | F | 61 | Roman Catholic | Irish | Ireland | No Occupation Listed | 90 |
| 4 | odonnell | james | M | 75 | Roman Catholic | Irish | Ireland | Other production and related workers nec | 32 |
| 4 | oflaherty | elizabeth | F | 48 | Roman Catholic | Irish | Ireland | No Occupation Listed | 91 |
| 7 | oflaherty | james | M | 23 | Roman Catholic | Irish | Quebec | Dealer, merchant etc. (Wholesale & retail trade) | 91 |
| 5 | oflaherty | john | M | 26 | Roman Catholic | Irish | Quebec | Journalists, reporters | 91 |
| 6 | oflaherty | kate | F | 25 | Roman Catholic | Irish | Quebec | No Occupation Listed | 91 |
| 25 | omalley | edward | M | 15 | Roman Catholic | Irish | Quebec | Clerk, nfs | 12 |
| 23 | omalley | ellen | F | 18 | Roman Catholic | Irish | Quebec | No Occupation Listed | 12 |
| 1 | omalley | emilley | F | 14 | Roman Catholic | Irish | Quebec | No Occupation Listed | 12 |
| 9 | omalley | estalla | F | 4 | Roman Catholic | Irish | Quebec | No Occupation Listed | 1 |
| 6 | omalley | james | M | 13 | Roman Catholic | Irish | Quebec | Coopers etc. | 1 |
| 8 | omalley | johanna | F | 8 | Roman Catholic | Irish | Quebec | No Occupation Listed | 1 |
| 18 | omalley | john | M | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 12 |
| 3 | omalley | john | M | 20 | Roman Catholic | Irish | Quebec | Drivers (general haulage) | 1 |
| 22 | omalley | julia | F | 20 | Roman Catholic | Irish | Quebec | No Occupation Listed | 12 |
| 2 | omalley | julia | F | 37 | Roman Catholic | Irish | Ireland | No Occupation Listed | 1 |
| 5 | omalley | margaret | F | 15 | Roman Catholic | Irish | Quebec | No Occupation Listed | 1 |
| 11 | omalley | margret | F | 70 | Roman Catholic | French | Ireland | No Occupation Listed | 135 |
| 7 | omalley | martin | M | 10 | Roman Catholic | Irish | Quebec | No Occupation Listed | 1 |
| 21 | omalley | mary | F | 21 | Roman Catholic | Irish | Quebec | No Occupation Listed | 12 |
| 20 | omalley | michael | M | 35 | Roman Catholic | Irish | Ireland | Clerk, nfs | 12 |
| 1 | omalley | patrick | M | 50 | Roman Catholic | Irish | Ireland | Drivers (general haulage) | 1 |
| 4 | omalley | patrick | M | 17 | Roman Catholic | Irish | Quebec | Telegraph operators | 1 |
| 10 | omalley | peter | M | 71 | Roman Catholic | French | Ireland | Labourers nfs | 135 |
| 19 | omalley | rosanne | F | 55 | Roman Catholic | Irish | Ireland | No Occupation Listed | 12 |
| 24 | omalley | sarah | F | 17 | Roman Catholic | Irish | Quebec | No Occupation Listed | 12 |
| 16 | oneil | james | M | 21 | Roman Catholic | Irish | Quebec | Clerk, nfs | 167 |
| 19 | oneil | louisa | F | 17 | Roman Catholic | Irish | Quebec | Milliners | 167 |
| 21 | oneil | maria | F | 75 | Roman Catholic | Irish | Ireland | No Occupation Listed | 192 |
| 14 | oneil | mary | F | 54 | Roman Catholic | French | Quebec | Teachers (unspecified) | 167 |
| 17 | oneil | mary | F | 23 | Roman Catholic | Irish | Quebec | No Occupation Listed | 167 |
| 15 | oneil | michael | M | 25 | Roman Catholic | Irish | Quebec | No Occupation Listed | 167 |
| 18 | oneil | sarah | F | 19 | Roman Catholic | Irish | Quebec | Teachers (unspecified) | 167 |
| 20 | oneil | simon | M | 15 | Roman Catholic | Irish | Quebec | Tailors and tailoresses | 167 |
| 12 | oneilly | ann | F | 62 | Roman Catholic | Irish | Ireland | No Occupation Listed | 240 |
| 13 | oneilly | bridget | F | 26 | Roman Catholic | Irish | Quebec | No Occupation Listed | 240 |
| 14 | oneilly | frances | F | 24 | Roman Catholic | Irish | Quebec | No Occupation Listed | 240 |
| 11 | oneilly | james | M | 65 | Roman Catholic | Irish | Ireland | Printers nfs | 240 |
| 9 | ouillet | artemise | F | 32 | Roman Catholic | French | Quebec | No Occupation Listed | 138 |
| 12 | ouillet | auron | F | 8 | Roman Catholic | French | Quebec | No Occupation Listed | 138 |
| 13 | ouillet | baptist | M | 7 | Roman Catholic | French | Quebec | No Occupation Listed | 138 |
| 14 | ouillet | josephine | F | 5 | Roman Catholic | French | Quebec | No Occupation Listed | 138 |
| 10 | ouillet | louis | M | 19 | Roman Catholic | French | Quebec | Labourers nfs | 138 |
| 11 | ouillet | zephyra | M | 11 | Roman Catholic | French | Quebec | No Occupation Listed | 138 |