1876 - 1912 (36 years)
| William Thurston Gwynne, ^ | |
| B: | 18 Apr 1909 |
| NY | |
| D: | 20 Sep 1996 |
| St. James, Smithtown, Suffolk, NY | |
| Alan Guy Brown, ^ | |
| B: | 1939 |
| D: | 15 Jan 1942 |
| Port Jefferson (Mather Hospital), Brookhaven, Suffolk, NY | |
| Marjorie Gwynne, ^ | |
| B: | Abt 1912 |
| NY | |
| D: | Yes, date unknown |
| Albert Brown | |
| B: | Abt 1910 |
| NY | |
| D: | Yes, date unknown |
|
| William H. Logan Gwinn | |
| B: | 10 Feb 1876 |
| Manhattan, New York City, New York, United States | |
| D: | 15 Apr 1912 |
| at sea | |
| Florence Rohde, ^ | |
| B: | 8 Nov 1879 |
| NY | |
| M: | Abt 1907 |
| D: | 1952 |
| {Brookhaven, Brookhaven, Suffolk, NY} | |
