| Father | John WILLIAMSON (1690 - 1760) |
| Mother | Sarah SMEDLEY (1694 - 1789) |
| Sibling | Mary WILLIAMSON (1715 - ) |
| Sibling | John WILLIAMSON (1717 - 1794) |
| Sibling | Sarah WILLIAMSON (1718 - ) |
| Sibling | Margaret WILLIAMSON (1719 - 1801) |
| Sibling | Alice WILLIAMSON (1721 - 1812) |
| Sibling | Esther WILLIAMSON (1723 - 1768) |
| Sibling | Jane WILLIAMSON (1725 - 1797) |
| Sibling | Daniel WILLIAMSON (1732 - 1805) |
| Sibling | Elizabeth WILLIAMSON (1706 - ) |
| Sibling | Susannah WILLIAMSON (1708 - ) |
| Sibling | Hannah WILLIAMSON (1710 - 1747) |
| Sibling | Cuthbert WILLIAMSON (1712 - 1751) |
| Sibling | Sarah WILLIAMSON (1714 - ) |