Residents of Sarnia — Sub-district B, surnames U (1881 Census)
| # | Surname | Given | Sex | Age | Religion | Origin | Birthplace | Occupation | HH |
| 12 | underwood | charles | M | 40 | Anglican | English | England | Pedlars and hawkers | 236 |
| 15 | underwood | elizabeth | F | 11 | Anglican | English | England | No Occupation Listed | 236 |
| 13 | underwood | hanna | F | 15 | Anglican | English | England | No Occupation Listed | 236 |
| 14 | underwood | william | M | 13 | Anglican | English | England | No Occupation Listed | 236 |
| 21 | upton | johenne | F | 37 | Roman Catholic | Irish | Ireland | No Occupation Listed | 230 |
| 20 | upton | john | M | 51 | Roman Catholic | Irish | Ireland | Farmers, general and nfs | 230 |