Individual Details
Gertrude Koop
(1907 - )
Events
| Birth | 1907 | Michigan, United States | |||
| Death |
Families
| Father | Rudmer Koop (1868 - 1940) |
| Mother | Martje "Mattie" Pott (1884 - 1958) |
| Sibling | Clara Koop (1903 - 1991) |
| Sibling | August Koop (1905 - ) |
| Sibling | Fred Koop (1908 - 1980) |
| Sibling | Carson Koop (1911 - 1916) |
| Sibling | Willis Koop (1919 - 1979) |