Residents of Matawin — Sub-district FF, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 23 | ocain | fk | M | 28 | Roman Catholic | Irish | Ontario | Postal or telegraph clerk nfs | 290 |
| 18 | oconnor | michl | M | 28 | Roman Catholic | Irish | Ireland | Labourers nfs | 39 |
| 8 | odonnell | neil | M | 15 | Roman Catholic | Irish | Ontario | Labourers nfs | 113 |
| 11 | oduyon | john | M | 30 | Roman Catholic | Irish | Ireland | Labourers nfs | 67 |
| 16 | off | james | M | 27 | Presbyterian | Scottish | Scotland | Carpenters | 5 |
| 17 | oga_mah | | F | 20 | Roman Catholic | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 257 |
| 7 | ogemecs | michel | M | 22 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 60 |
| 6 | ogemecs | | M | 40 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 60 |
| 8 | ogemecs | | M | 22 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 60 |
| 9 | ogemecs | | F | 13 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 60 |
| 10 | ogemecs | | F | 10 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 60 |
| 24 | ogimationatorp | | M | 40 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 35 |
| 25 | ogimationatorp | | F | 32 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 35 |
| 3 | ogoma_bun_netiuc | | M | 60 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 8 |
| 7 | ogowanance | bill | M | 35 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 45 |
| 5 | ogowanance | | M | | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 45 |
| 6 | ogowanance | | F | 50 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 45 |
| 8 | ogowanance | | F | 20 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 45 |
| 9 | ogowanance | | M | 19 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 45 |
| 10 | ogowanance | | M | 12 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 45 |
| 11 | ogowanance | | M | 10 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 45 |
| 12 | ogowanance | | F | 5 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 45 |
| 5 | ogunacie | | M | 30 | Roman Catholic | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 116 |
| 6 | ogunacie | | F | 26 | Roman Catholic | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 116 |
| 7 | ogunacie | | M | 5 | Roman Catholic | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 116 |
| 8 | ogunacie | | F | 3 | Roman Catholic | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 116 |
| 9 | ogunacie | | M | 1 | Roman Catholic | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 116 |
| 13 | ohanley | j | M | 23 | Roman Catholic | Irish | Ontario | Engineers (US) nfs | 193 |
| 13 | oldstrom | agust | M | 12 | Lutheran | Swedish | Sweden | Labourers nfs | 161 |
| 12 | oldstrom | ereka | F | 36 | Lutheran | Swedish | Sweden | Labourers nfs | 161 |
| 11 | oldstrom | g | M | 23 | Lutheran | Swedish | Sweden | Labourers nfs | 161 |
| 10 | oleason | john | M | 29 | Lutheran | Swedish | Sweden | Labourers nfs | 127 |
| 3 | olleson | jacob | M | 30 | Lutheran | Swedish | Sweden | Labourers nfs | 187 |
| 19 | olleson | sam | M | 35 | Lutheran | Norwegian | Norway | Labourers nfs | 315 |
| 22 | olleson | swan | F | 45 | Lutheran | Swedish | Sweden | Labourers nfs | 301 |
| 2 | olleston | ole | M | 30 | Lutheran | Norwegian | Norway | Labourers nfs | 124 |
| 4 | olleston | swan | M | 30 | Lutheran | Swedish | Sweden | Miners | 125 |
| 6 | ollison | agust | M | 30 | Lutheran | Swedish | Sweden | Labourers nfs | 262 |
| 11 | ollsson | ebenz | M | 30 | Lutheran | Swedish | Sweden | Labourers nfs | 200 |
| 2 | oneil | c | M | 29 | Anglican | Irish | England | Labourers nfs | 93 |
| 8 | oneil | john | M | 29 | Roman Catholic | Irish | Ontario | No Occupation Listed | 96 |
| 10 | oneil | michl | M | 28 | Roman Catholic | Irish | Ontario | Labourers nfs | 167 |
| 22 | opumusin | | M | 50 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 43 |
| 23 | opumusin | | F | | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 43 |
| 6 | oqimaughbetuoye | | M | | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 73 |
| 7 | oqimaughbetuoye | | F | | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 73 |
| 8 | oqimaughbetuoye | | F | 15 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 73 |
| 9 | oqimaughbetuoye | | F | 10 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 73 |
| 22 | organ | william | M | 9 | Roman Catholic | Irish | United States | No Occupation Listed | 55 |
| 21 | organ | wm | M | 36 | Roman Catholic | Irish | Ireland | Seamen | 55 |
| 6 | orumore | peter | M | 34 | Lutheran | Norwegian | Norway | Labourers nfs | 143 |
| 6 | osdhuniogoshkorig | | M | 27 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 81 |
| 11 | oshambeau | geo | M | 21 | Roman Catholic | French | Ontario | Labourers nfs | 167 |
| 23 | oshay | danl | M | 20 | Roman Catholic | Irish | Ireland | Labourers nfs | 338 |
| 4 | oshuniogoshkorig | | M | 50 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 81 |
| 5 | oshuniogoshkorig | | F | | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 81 |
| 7 | oshuniogoshkorig | | F | 22 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 81 |
| 8 | oshuniogoshkorig | | M | 3 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 81 |
| 9 | oshuniogoshkorig | | F | 1 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 81 |
| 14 | oskibonific | jim | M | 12 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 61 |
| 13 | oskibonific | joe | M | 15 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 61 |
| 11 | oskibonific | | M | | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 61 |
| 12 | oskibonific | | F | 30 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 61 |
| 15 | oskibonific | | F | 7 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 61 |
| 13 | oskida | | M | 33 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 32 |
| 14 | oskida | | F | 30 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 32 |
| 15 | oskida | | F | 16 | Pagan | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 32 |
| 1 | otta_waw | | M | 3 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 7 |
| 24 | otta_waw_qua | | F | 6 | | Aboriginal peoples, n.s | Ontario | No Occupation Listed | 7 |
| 2 | owen | j | M | 22 | Lutheran | Norwegian | Norway | Labourers nfs | 326 |