Residents of Trois-Rivières, Ste. Ursule Ward—Quartier — Sub-district C, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 1 | odgen | c | M | 51 | Anglican | English | Quebec | Postmasters and postmistresses | 1 |
| 2 | ogden | rosina | F | 36 | Anglican | English | Quebec | No Occupation Listed | 1 |
| 2 | ouellette | mary | F | 19 | Roman Catholic | Aboriginal peoples, n.s | Quebec | Servants nfs | 34 |
| 24 | ouilette | joseph | M | 57 | Roman Catholic | French | Quebec | Labourers nfs | 43 |
| 20 | ourthibise | almanda | F | 25 | Roman Catholic | French | Quebec | No Occupation Listed | 158 |
| 23 | ourthibise | henry | M | 0 | Roman Catholic | French | Quebec | No Occupation Listed | 158 |
| 19 | ourthibise | joseph | M | 25 | Roman Catholic | French | Quebec | Engineers (US) nfs | 158 |
| 21 | ourthibise | joseph | M | 6 | Roman Catholic | French | Quebec | No Occupation Listed | 158 |
| 22 | ourthibise | moise | M | 3 | Roman Catholic | French | Quebec | No Occupation Listed | 158 |