1891 - 1967 (75 years)
| Robert D. Blakeslee | |
| B: | 1923 |
| New York, United States of America | |
| D: | 28 Nov 1925 |
| Manhattan, New York County (Manhattan), New York, United States of America | |
|
| Elwood Donald Blakeslee | |
| B: | 25 Jul 1891 |
| Hainesport, Burlington, New Jersey, United States | |
| D: | 14 Jan 1967 |
| Vero Beach, Indian River, Florida, United States | |
| Mabel P. Smith, "Rock" ^ | |
| B: | 30 Aug 1889 |
| Bellport, Brookhaven, Suffolk, New York, United States | |
| M: | 1 Sep 1917 |
| Patchogue, Brookhaven, Suffolk, New York, United States | |
| D: | 3 Aug 1961 |
| Brookhaven, Suffolk, New York, United States | |
