Individual Details
Living
( - )
Families
| Spouse | Richard David Mardorf (1923 - 2011) |
| Father | Garret Menno Siebels (1887 - 1955) |
| Mother | Fanna M "Fannie" Schaefer (1892 - 1979) |
| Sibling | Lawrence Johannes Siebels (1918 - 2013) |
| Sibling | Gartha Augusta Siebels (1920 - 1922) |
| Sibling | Edward L Siebels (1921 - ) |