1873 - 1947 (73 years)
| Anthony Drexel Duke, Sr. | |
| B: | 28 Jul 1918 |
| Manhattan, New York City, New York, United States | |
| D: | 30 Apr 2014 |
| Gainesville, Alachua, Florida, United States | |
| Alice Noel Rutgers | |
| B: | 26 Sep 1919 |
| New Brunswick, Middlesex, New Jersey, United States | |
| M: | 1939 |
| D: | 12 Aug 1980 |
| New London, Connecticut, United States | |
| Elizabeth “Betty” Ordway | |
| B: | 25 Jul 1925 |
| M: | 1947 |
| D: | 18 Apr 1984 |
| Barclay Robertson Duke | |
| B: | 26 Apr 1961 |
| Manhattan, New York City, New York, USA | |
| D: | 17 Dec 1989 |
| East Hampton, Suffolk, New York, USA | |
| Nancy Ann Abendschoen | |
| B: | Abt 1961 |
| M: | 21 Jun 1986 |
| Morris Township, Morris, New Jersey, USA | |
| D: | Yes, date unknown |
| Diane Marie Douglas | |
| B: | 30 May 1933 |
| New York, United States | |
| M: | 1957 |
| D: | 6 May 2015 |
| Southhampton NY | |
| Angier Biddle Duke | |
| B: | 13 Nov 1915 |
| New York City, New York, United States | |
| D: | 29 Apr 1995 |
| Southampton, Suffolk, New York, United States | |
| Cordelia Drexel Biddle, II | |
| B: | 16 Apr 1898 |
| Philadelphia, Pennsylvania, United States | |
| D: | 25 Nov 1984 |
| Manhattan, New York City, New York, United States | |
| Angier Buchanan Duke | |
| B: | 8 Dec 1884 |
| Durham, Durham, North Carolina, United States | |
| M: | 28 Apr 1915 |
| Philadelphia, Pennsylvania, United States | |
| D: | 3 Sep 1923 |
| Greenwich, Fairfield, Connecticut, United States | |
|
| Cordelia Rundell Bradley | |
| B: | 13 Sep 1873 |
| Pennsylvania, United States | |
| D: | 25 Jul 1947 |
| Philadelphia, Pennsylvania, United States | |
| Col. Anthony Joseph Drexel Biddle, Sr. | |
| B: | 1 Oct 1874 |
| Philadelphia, Pennsylvania, United States | |
| M: | 11 Jun 1895 |
| Allegheny, Pennsylvania, United States | |
| D: | 27 May 1948 |
| Philadelphia, Pennsylvania, United States | |
