1821 - 1896 (74 years)
| Helen Williamson | |
| B: | Abt 1898 |
| NY | |
| D: | Yes, date unknown |
| Jaqulin S. Helmus | |
| B: | 1960 |
| D: | 1960 |
| John Frederick Helmus, Jr. ^ | |
| B: | 15 Feb 1930 |
| NY | |
| D: | 19 Sep 1997 |
| Hester Williamson, > | |
| B: | Abt 1905 |
| NY | |
| D: | Yes, date unknown |
| John Frederick Helmus, > | |
| B: | 13 Oct 1903 |
| NY | |
| M: | Abt 1929 |
| D: | 18 Dec 2002 |
| Bradenton, Manatee, Florida, United States | |
| Emily Williamson | |
| B: | Abt 1908 |
| NY | |
| D: | Yes, date unknown |
| Cornelius Stryker Williamson, Sr. | |
| B: | 20 Feb 1852 |
| Brooklyn, Kings, New York, United States | |
| D: | 8 Aug 1931 |
| Brooklyn, Kings, New York, United States | |
| Flora May Durland | |
| B: | Apr 1868 |
| New York, United States | |
| M: | 24 Oct 1894 |
| New York, United States | |
| D: | Sep 1950 |
| Wilhelmina Schenck | |
| B: | 12 Jul 1821 |
| Flatbush, Long Island, Kings County, New York | |
| D: | 12 Jan 1896 |
| William Williamson | |
| B: | 17 Feb 1818 |
| New York, United States | |
| D: | 12 May 1905 |
