| Father | Rasmus Adamson (1841 - 1918) |
| Mother | Ana Christine Lohse (1851 - 1925) |
| Sibling | Gustav Peter "Gus" Adamson (1890 - 1957) |
| Sibling | Ellen Kristine Adamson (1871 - 1872) |
| Sibling | Ellen Katrine Adamson (1875 - 1950) |
| Sibling | Louise Charlotte "Lottie" Adamson (1878 - 1968) |
| Sibling | Sophie Rosalie "Rosa" Adamson (1881 - 1965) |
| Sibling | Otto Christian Adamson (1881 - 1960) |
| Sibling | Henry Jacob Adamson (1883 - 1956) |
| Sibling | Joseph William Adamson (1885 - 1957) |
| Sibling | Lillie Gjertris Adamson (1888 - 1964) |
| Sibling | Emil Alfred Adamson (1892 - 1978) |
| Sibling | Olive Adamson (1898 - 1919) |