1915 - 1965 (50 years)
| Ethel Du Pont 1915-1965 |
| Ethel Du Pont | |
| B: | 1915 |
| Wilmington, New Castle, Delaware, USA | |
| D: | 25 May 1965 |
| Grosse Pointe, Wayne, Michigan, USA | |
 | Franklin Delano Roosevelt, III 1914-1988 |
| Franklin Delano Roosevelt, III | |
| B: | 17 Aug 1914 |
| Campobello, Charlotte, New Brunswick, Canada | |
| M: | 30 Jun 1937 |
| Wilmington, New Castle, Delaware, USA | |
| D: | 17 Aug 1988 |
| Poughkeepsie, Dutchess, New York, USA | |
