| Father | Charles D. Williamson (1783 - 1842) |
| Mother | Mary Hoover (1794 - 1842) |
| Sibling | Joseph Absolum Williamson (1808 - 1886) |
| Sibling | Catherine "Katie" Anne Williamson (1810 - 1892) |
| Sibling | Mary M. Williamson (1812 - ) |
| Sibling | Jerucia Francis Williamson (1814 - 1866) |
| Sibling | Margaret Williamson (1816 - 1895) |
| Sibling | William C. Williamson (1818 - ) |
| Sibling | David C. Williamson (1820 - 1870) |
| Sibling | M. T. Williamson (1822 - ) |
| Sibling | John Thomas Williamson (1824 - 1870) |
| Sibling | Augustus Williamson (1826 - ) |
| Sibling | Charles Floyd Williamson (1829 - ) |
| Sibling | Caroline Williamson (1830 - ) |
| Sibling | Harriet L. "Shannon" Williamson (1833 - 1898) |