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 | William King Schaefer (1880-1956)
|
 | Charlotte Marie Honsinger (1900-1989) |
 | William King Schaefer Jr. (1926-2017)  |
 | Robert Merrill Zwicky (1921-1944) |
| Charlotte Marie Schaefer (1924-1980)
|
 | Charlotte M Zwicky (1944-2011) |
| Robert Michael John Zwicky Jr. (1946-2019) |
 | Debra Sue Zwicky (1956-2021) |
 | Diane Carol Zwicky (1961-2021) |
