| Father | Herman August Toenjes (1856 - 1938) |
| Mother | Anke Margaretha "Margaret" Zimmerman (1859 - 1941) |
| Sibling | Johann Christoph "John" Toenjes (1877 - 1962) |
| Sibling | Anna Elisabeth Toenjes (1878 - 1965) |
| Sibling | Arend Gerhard Toenjes (1880 - 1926) |
| Sibling | Augusta Maria Friederike "Gusta" Toenjes (1882 - ) |
| Sibling | Juliane Engeline "Julia" Toenjes (1884 - 1969) |
| Sibling | Gertrude Johanna "Hannah" Toenjes (1886 - 1916) |
| Sibling | George Dietrich Toenjes (1889 - 1938) |
| Sibling | Elise Maria "Lizzie" Toenjes (1892 - 1974) |
| Sibling | Lorene Katharina "Laura" Toenjes (1899 - 1967) |
