Residents of St. Sylvestre, VL — Sub-district N, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 2 | odanald | hanna | F | 70 | Roman Catholic | Irish | Ireland | No Occupation Listed | 38 |
| 1 | odanald | hugh | M | 75 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 38 |
| 24 | odonnell | brigitte | F | 14 | Roman Catholic | Irish | Quebec | No Occupation Listed | 26 |
| 1 | odonnell | james | M | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 26 |
| 25 | odonnell | jones | M | 7 | Roman Catholic | Irish | Quebec | No Occupation Listed | 26 |
| 22 | odonnell | mach | M | 16 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 26 |
| 21 | odonnell | wedy | F | 43 | Roman Catholic | Irish | Quebec | Female farmer | 26 |
| 23 | odonnell | william | M | 10 | Roman Catholic | Irish | Quebec | No Occupation Listed | 26 |
| 21 | ogan | brigite | F | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 8 |
| 20 | ogan | catherine | F | 17 | Roman Catholic | Irish | Quebec | No Occupation Listed | 8 |
| 11 | ogan | james | M | 60 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 69 |
| 15 | ogan | johny | M | 15 | Roman Catholic | Irish | Quebec | No Occupation Listed | 8 |
| 19 | ogan | joseph | M | 3 | Roman Catholic | Irish | Quebec | No Occupation Listed | 8 |
| 22 | ogan | leusian | F | 1 | Roman Catholic | Irish | Quebec | No Occupation Listed | 8 |
| 14 | ogan | mary | F | 40 | Roman Catholic | Irish | Quebec | No Occupation Listed | 8 |
| 12 | ogan | mary | F | 60 | Roman Catholic | Irish | Ireland | No Occupation Listed | 69 |
| 13 | ogan | michel | M | 44 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 8 |
| 16 | ogan | michel | M | 11 | Roman Catholic | Irish | Quebec | No Occupation Listed | 8 |
| 14 | ogan | michel | M | 25 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 69 |
| 13 | ogan | patrick | M | 30 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 69 |
| 17 | ogan | richard | M | 9 | Roman Catholic | Irish | Quebec | No Occupation Listed | 8 |
| 18 | ogan | thomas | M | 7 | Roman Catholic | Irish | Quebec | No Occupation Listed | 8 |
| 10 | ogle | ellen | F | 30 | Roman Catholic | Irish | Quebec | No Occupation Listed | 145 |
| 12 | ogle | john | M | 36 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 145 |
| 9 | onail | alas | F | 18 | Roman Catholic | Irish | Quebec | No Occupation Listed | 80 |
| 6 | onail | brigite | F | 45 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 80 |
| 7 | onail | charles | M | 23 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 80 |
| 10 | onail | james | M | 16 | Roman Catholic | Irish | Quebec | No Occupation Listed | 80 |
| 8 | onail | john | M | 21 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 80 |
| 18 | onaill | alas | F | 20 | Roman Catholic | Irish | Quebec | No Occupation Listed | 70 |
| 15 | onaill | brigite | F | 50 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 70 |
| 16 | onaill | charles | M | 24 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 70 |
| 19 | onaill | james | M | 19 | Roman Catholic | Irish | Quebec | No Occupation Listed | 70 |
| 17 | onaill | john | M | 22 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 70 |
| 20 | onaill | mary | F | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 70 |
| 23 | oneil | anny | F | 30 | Roman Catholic | Irish | Quebec | No Occupation Listed | 170 |
| 22 | oneil | charles | M | 30 | Roman Catholic | Irish | Quebec | Farmers, general and nfs | 170 |
| 4 | oneil | constantin | M | 60 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 170 |
| 5 | oneil | ellen | F | 65 | Roman Catholic | Irish | Ireland | No Occupation Listed | 170 |
| 24 | oneil | john | M | 12 | Roman Catholic | Irish | Quebec | No Occupation Listed | 170 |
| 1 | oneil | lazy | F | 5 | Roman Catholic | Irish | Quebec | No Occupation Listed | 170 |
| 2 | oneil | mary | F | 3 | Roman Catholic | Irish | Quebec | No Occupation Listed | 170 |
| 25 | oneil | rose | F | 8 | Roman Catholic | Irish | Quebec | No Occupation Listed | 170 |
| 3 | oneil | theresta | F | 0 | Roman Catholic | Irish | Quebec | No Occupation Listed | 170 |
| 16 | osborne | elisabeth | F | 36 | Roman Catholic | Irish | Quebec | Female farmer | 114 |
| 4 | osburn | charly | M | 13 | Roman Catholic | Irish | Quebec | No Occupation Listed | 31 |
| 9 | osburn | joseph | M | 17 | Roman Catholic | Irish | Quebec | Domestic and House Servants | 217 |