Biography
Thomas Leffingwell was born 11 March 1674 in New London County, Connecticut, United States to Thomas Leffingwell (1649-1724) and Mary Bushnell (1654-1745) and died 18 June 1733 Norwich, New London County, Connecticut, United States of unspecified causes. He married Lydia Tracy (1677-1757) 31 March 1698 in Norwich, New London County, Connecticut, United States.
Children
| Name | Birth | Death | Joined with |
| Sarah Leffingwell (1699-1770) | 13 February 1699 Norwich, New London County, Connecticut, United States | 1 April 1770 Norwich, New London County, Connecticut, United States | Ebenezer Huntington (1692-1768) |
| Hezekiah Leffingwell (1702-1725) | |||
| Thomas Leffingwell (1704-1793) | 2 February 1704 Norwich, New London County, Connecticut, United States | 28 September 1793 Norwich, New London County, Connecticut, United States | Elizabeth Lord (1708-1763) |
| Lydia Leffingwell (1706-1766) | 28 July 1706 Norwich, New London County, Connecticut, United States | 2 April 1766 Norwich, New London County, Connecticut, United States | Ebenezer Lathrop (1703-1781) |
| Zerviah Leffingwell (1709-1751) | |||
| Samuel Leffingwell (1722-1797) | |||
Footnotes (including sources)
| ‡ General |
|