Residents of Ste. Marie — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 14 | octavie | guenet | F | 24 | Roman Catholic | French | Quebec | No Occupation Listed | 72 |
| 10 | odilon | melent | M | 9 | Roman Catholic | French | Quebec | No Occupation Listed | 71 |
| 2 | olnyeu | catherine | F | 63 | Roman Catholic | Irish | Quebec | No Occupation Listed | 1 |
| 7 | omer | melent | M | 17 | Roman Catholic | French | Quebec | No Occupation Listed | 71 |
| 7 | onier | labbi | M | 12 | Roman Catholic | French | Quebec | No Occupation Listed | 76 |
| 10 | oournier | henedine | F | 27 | Roman Catholic | French | Quebec | No Occupation Listed | 206 |
| 9 | oournier | hilaire | M | 26 | Roman Catholic | French | Quebec | Day labourers (e.g journalier) | 206 |
| 11 | oournier | leda | F | 3 | Roman Catholic | French | Quebec | No Occupation Listed | 206 |
| 12 | oournier | ludger | M | 1 | Roman Catholic | French | Quebec | No Occupation Listed | 206 |
| 1 | ouellet | anna | F | 0 | Roman Catholic | French | Quebec | No Occupation Listed | 141 |
| 25 | ouellet | marie | F | 20 | Roman Catholic | French | Quebec | No Occupation Listed | 141 |
| 24 | ouellet | paschal | M | 27 | Roman Catholic | French | Quebec | Confectioners and pastry makers | 141 |