| | Anna Evelyn Gertzen 1911–1989 Thomas Edison Cooper 1906–1974 | | |
George William Gertzen 1911–1977 | | |
| | Ernest John Gertzen 1899–1951 Henrietta de Bondt 1906–2004 | | |
| | Richard Julius Gertzen 1901–1976 Mildred Thelma Waggoner 1906–1988 Marie Elizabeth Swanson 1905–1989 | | |
| | Cynthia Theresa Julia Gertzen 1903–1987 Ernest van Roekel 1898–1972 | | |
| | Lawrence Gertzen 1905–1997 Jean Patterson Cameron 1914–1998 | | |
| | Wilhelmina Huiberdina Kaasjager 1887–1966 Henrietta Ketel 1878–1909 | | |