Thomas Williamson was born 18 September 1748 in Henrico County, Virginia, USA to Thomas Williamson (1708-1787) and Judith Fleming (1715-1790) and died 16 December 1804 of unspecified causes.
Children
| Name | Birth | Death | Joined with |
| Susannah Williamson (1775-1865) | 15 May 1775 | 1865 | Samuel Crow (1771-1849) |
| Abel Williamson (1776-) | |||
| Abraham Williamson (1776-1830) | |||
| Thomas Williamson (1784-) | |||
| Bright Williamson (1788-) | |||
| Robert Williamson (1790-1847) | |||
| Wiley Williamson (1803-) | |||
| Margaret Williamson (?-?) | |||
Siblings