Residents of Woolwich — Sub-district A, surnames O (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 6 | obigiszer | barber | F | 21 | Baptist | German | Ontario | No Occupation Listed | 175 |
| 5 | obigiszer | barberer | F | 65 | Baptist | German | Germany | No Occupation Listed | 175 |
| 4 | obigiszer | john | M | 66 | Baptist | German | Germany | Farmers, general and nfs | 175 |
| 20 | oblander | andrew | M | 27 | Evangelical | German | United States | No Occupation Listed | 131 |
| 7 | oblander | christoph | M | 19 | Lutheran | German | Ontario | Farmers, general and nfs | 247 |
| 14 | opfer | jacob | M | 58 | Evangelical | German | Germany | Farmers, general and nfs | 298 |
| 15 | opfer | margareth | F | 62 | Evangelical | German | Germany | No Occupation Listed | 298 |
| 16 | opfer | peter | M | 27 | Evangelical | German | Ontario | Farmers, general and nfs | 298 |
| 23 | opperthaeuser | charles | M | 6 | Lutheran | German | Ontario | No Occupation Listed | 328 |
| 15 | opperthaeuser | conrad | M | 54 | Lutheran | German | Germany | Farmers, general and nfs | 328 |
| 21 | opperthaeuser | elisabeth | F | 11 | Lutheran | German | Ontario | No Occupation Listed | 328 |
| 22 | opperthaeuser | george | M | 9 | Lutheran | German | Ontario | No Occupation Listed | 328 |
| 19 | opperthaeuser | henry | M | 14 | Lutheran | German | Ontario | Farmers, general and nfs | 328 |
| 20 | opperthaeuser | john | M | 13 | Lutheran | German | Ontario | No Occupation Listed | 328 |
| 18 | opperthaeuser | margareth | F | 17 | Lutheran | German | — | No Occupation Listed | 328 |
| 16 | opperthaeuser | mary | F | 48 | Lutheran | German | Ontario | No Occupation Listed | 328 |
| 17 | opperthaeuser | valentine | M | 20 | Lutheran | German | — | Farmers, general and nfs | 328 |
| 16 | oppertshaeuser | charles | M | 2 | Lutheran | German | Ontario | No Occupation Listed | 209 |
| 14 | oppertshaeuser | elisabeth | F | 21 | Lutheran | German | Ontario | No Occupation Listed | 209 |
| 13 | oppertshaeuser | henry | M | 26 | Lutheran | German | Germany | Blacksmiths | 209 |
| 17 | oppertshaeuser | otto | M | 0 | Lutheran | German | Ontario | No Occupation Listed | 209 |
| 15 | oppertshaeuser | william | M | 3 | Lutheran | German | Ontario | No Occupation Listed | 209 |
| 9 | ortwein | catherine | F | 22 | Evangelical Methodist | German | Ontario | Weavers | 254 |
| 12 | ortwein | john | M | 14 | Evangelical Methodist | German | Ontario | No Occupation Listed | 254 |
| 3 | ortwein | maria | F | 72 | Evangelical Methodist | German | Germany | No Occupation Listed | 187 |
| 11 | ortwein | mary | F | 16 | Evangelical Methodist | German | Ontario | Servants nfs | 254 |
| 8 | ortwein | sussannah | F | 54 | Evangelical Methodist | German | Germany | No Occupation Listed | 254 |
| 10 | ortwein | william | M | 18 | Evangelical Methodist | German | Ontario | Tailors and tailoresses | 254 |
| 15 | oswald | b | M | 49 | Lutheran | German | Germany | Farmers, general and nfs | 83 |
| 21 | oswald | carolina | F | 10 | Lutheran | German | Ontario | No Occupation Listed | 83 |
| 23 | oswald | catherine | F | 77 | Lutheran | German | Germany | No Occupation Listed | 84 |
| 16 | oswald | clara | F | 2 | Lutheran | German | Ontario | No Occupation Listed | 178 |
| 11 | oswald | conrod | M | 66 | Lutheran | German | Germany | Farmers, general and nfs | 177 |
| 18 | oswald | eva | F | 16 | Lutheran | German | Ontario | No Occupation Listed | 83 |
| 20 | oswald | jacob | M | 12 | Lutheran | German | Ontario | No Occupation Listed | 83 |
| 22 | oswald | jacob | M | 78 | Lutheran | German | Germany | No Occupation Listed | 84 |
| 12 | oswald | margret | F | 63 | Lutheran | German | Germany | No Occupation Listed | 177 |
| 17 | oswald | mary | F | 18 | Lutheran | German | Ontario | No Occupation Listed | 83 |
| 15 | oswald | mary | F | 25 | Lutheran | German | Ontario | No Occupation Listed | 178 |
| 13 | oswald | michel | M | 73 | Lutheran | German | Germany | No Occupation Listed | 177 |
| 14 | oswald | michel | M | 25 | Lutheran | German | Ontario | Farmers, general and nfs | 178 |
| 16 | oswald | philipina | F | 42 | Lutheran | German | Ontario | No Occupation Listed | 83 |
| 19 | oswald | philipina | F | 14 | Lutheran | German | Ontario | No Occupation Listed | 83 |
| 21 | ott | catherina | F | 26 | Lutheran | German | Ontario | No Occupation Listed | 231 |
| 22 | ott | conrad | M | 6 | Lutheran | German | Ontario | No Occupation Listed | 231 |
| 7 | ott | dorothea | F | 24 | Lutheran | German | Ontario | No Occupation Listed | 229 |
| 1 | ott | elizabeth | F | 48 | Lutheran | German | Germany | No Occupation Listed | 97 |
| 6 | ott | elizabeth | F | 9 | Lutheran | German | Ontario | No Occupation Listed | 97 |
| 24 | ott | henry | M | 2 | Lutheran | German | Ontario | No Occupation Listed | 231 |
| 25 | ott | john | M | 52 | Lutheran | German | Germany | Farmers, general and nfs | 97 |
| 2 | ott | john | M | 23 | Lutheran | German | Ontario | river drivers | 97 |
| 6 | ott | john | M | 28 | Lutheran | German | Ontario | Brick and tile makers | 229 |
| 3 | ott | lewis | M | 19 | Lutheran | German | Ontario | No Occupation Listed | 97 |
| 4 | ott | mary | F | 14 | Lutheran | German | Ontario | No Occupation Listed | 97 |
| 23 | ott | mathilda | F | 4 | Lutheran | German | Ontario | No Occupation Listed | 231 |
| 20 | ott | michael | M | 34 | Lutheran | German | Ontario | Farmers, general and nfs | 231 |
| 5 | ott | william | M | 12 | Lutheran | German | Ontario | No Occupation Listed | 97 |
| 14 | otterbein | adam | M | 21 | Lutheran | German | Ontario | Servants nfs | 225 |
| 23 | otterbein | caspar | M | 63 | Lutheran | German | Germany | Farmers, general and nfs | 279 |
| 2 | otterbein | catharine | F | 16 | Lutheran | German | Ontario | No Occupation Listed | 279 |
| 25 | otterbein | christian | M | 23 | Lutheran | German | Ontario | Brewers | 279 |
| 11 | otterbein | conrad | M | 55 | Lutheran | German | Germany | Weavers | 225 |
| 13 | otterbein | elizabeth | F | 27 | Lutheran | German | Germany | Servants nfs | 225 |
| 16 | otterbein | john | M | 11 | Lutheran | German | Ontario | No Occupation Listed | 225 |
| 1 | otterbein | john | M | 20 | Lutheran | German | Ontario | Farmers, general and nfs | 279 |
| 12 | otterbein | margaret | F | 54 | Lutheran | German | Germany | No Occupation Listed | 225 |
| 15 | otterbein | margaret | F | 17 | Lutheran | German | Ontario | Servants nfs | 225 |
| 24 | otterbein | margareth | F | 58 | Lutheran | German | Germany | No Occupation Listed | 279 |