1877 - 1934 (57 years)
| Ralph Norton McDowall | |
| B: | 10 Aug 1935 |
| Islip, New York, USA | |
| D: | 21 Mar 2023 |
| West Sayville, Suffolk, New York, United States | |
| Elizabeth McCarthy | |
| B: | 1938 |
| Sayville, Suffolk, New York, USA | |
| D: | 28 Jul 2003 |
| Brookhaven, Suffolk, New York, USA | |
| Kenneth "Sandy" Hunter McDowall, Jr. | |
| B: | 15 Jul 1930 |
| Brooklyn, New York City, New York, United States | |
| D: | 17 Dec 2007 |
| Beverly A Gibson | |
| B: | Abt 1935 |
| M: | 21 Nov 1981 |
| Los Angeles, California, USA | |
| D: | Yes, date unknown |
| Kenneth H McDowall | |
| B: | Abt 1903 |
| New York, USA | |
| D: | 18 Dec 1935 |
| Islip, New York, USA | |
| Francis Eleanor Norton | |
| B: | 30 Jan 1907 |
| Islip, New York, United States | |
| M: | 17 Mar 1928 |
| Greenwich, Connecticut, USA | |
| D: | 1 Dec 1968 |
| Bayport, Suffolk, New York, USA | |
| Anna Hunter | |
| B: | 1877 |
| New York | |
| D: | 5 Jan 1934 |
| Manhattan, New York City, New York, United States | |
| James McDowall | |
| B: | Abt 1877 |
| Scotland | |
| D: | Yes, date unknown |
