1855 - 1919 (64 years)
| James E. Treadwell | |
| B: | 8 Apr 1928 |
| Bayshore Suf, New York | |
| D: | 29 Oct 1991 |
| St James, Suffolk, New York, USA | |
| Phyllis Catherine Gaiser | |
| B: | 1940 |
| M: | 23 Jan 1965 |
| Hempstead, New York, USA | |
| D: | 2012 |
| Irene Tredwell | |
| B: | 10 Mar 1924 |
| D: | 26 Dec 1995 |
| Robert Treadwell | |
| B: | 1916 |
| New York | |
| George Treadwell | |
| B: | 1913 |
| New York | |
| Hazel Treadwell | |
| B: | 1911 |
| New York | |
| Henry Treadwell | |
| B: | 1910 |
| New York | |
| Theodore H Treadwell | |
| B: | 1909 |
| New York | |
| Bessie Treadwell | |
| B: | 1908 |
| New York | |
| Lulu B. Cuffee | |
| B: | 20 May 1887 |
| New York, United States | |
| D: | Yes, date unknown |
| Theodore Morton Treadwell, Jr | |
| B: | 7 Apr 1889 |
| Port Jefferson, Brookhaven, Suffolk, New York, United States | |
| M: | Abt 1905 |
| New York, United States | |
| D: | 10 Dec 1937 |
| Saint James, Smithtown, Suffolk, New York, United States | |
| William Henry Cuffee | |
| B: | May 1855 |
| New York | |
| D: | 21 Sep 1919 |
| Stony Brook, Brookhaven, Suffolk, New York, United States | |
| Mary Ellen Mitchell | |
| B: | Abt 1869 |
| New Jersey, United States | |
