1844 - 1903 (59 years)
| Charles C. Forbes, ^ | |
| B: | Abt 1917 |
| NY | |
| D: | Yes, date unknown |
| Gloria A. Forbes, ^ | |
| B: | Abt 1918 |
| NY | |
| D: | Yes, date unknown |
| [s.\] Forbes, ^ | |
| B: | Abt Jun 1927 |
| D: | 23 Sep 1928 |
| Brookhaven, Brookhaven, Suffolk, NY | |
| Gordon Maxwell Forbes | |
| B: | 6 Feb 1930 |
| Brookhaven, Suffolk, New York, United States | |
| D: | 25 Jun 2020 |
| Lakewood, Lakewood Township, Ocean, New Jersey, United States | |
| June Lolita Cassidy | |
| B: | 2 Sep 1925 |
| Endicott, Broome, New York, United States | |
| M: | 16 Jul 1960 |
| United States | |
| D: | 27 Jan 1994 |
| New Jersey, United States | |
| Grace Bain Devall | |
| B: | 17 Sep 1892 |
| Manhattan, New York County, New York, United States | |
| D: | 19 Feb 1976 |
| Smyrna, Kent, Delaware, United States | |
| Harlow Campbell Forbes, ^ | |
| B: | Abt Aug 1893 |
| NY | |
| M: | 18 Sep 1913 |
| Manhattan, New York City, New York, United States | |
| D: | Yes, date unknown |
| Elizabeth Lumsden Bain | |
| B: | 14 Jan 1865 |
| Glasgow, Lanarkshire, Scotland, United Kingdom | |
| D: | 21 Feb 1940 |
| Manhattan, New York City, New York, United States | |
| Eugene DeVall | |
| B: | 2 Mar 1859 |
| The Corner, Ulster, New York, United States | |
| M: | 16 Sep 1891 |
| Manhattan, New York County, New York, United States | |
| D: | 21 Feb 1919 |
| Manhattan, New York City, New York, United States | |
| Elizabeth Lumsden | |
| B: | May 1844 |
| Glasgow, Lanarkshire, Scotland, United Kingdom | |
| D: | 7 Jul 1903 |
| Manhattan, New York City, New York, United States | |
| John Rice Bain | |
| B: | 20 Sep 1838 |
| County Down, Ireland | |
| M: | 9 Feb 1864 |
| Glasgow, Lanarkshire, Scotland, UK | |
| D: | 11 Jan 1884 |
| New York City, New York County, New York, United States | |
