| Father | Joseph Absolum Williamson (1808 - 1886) |
| Mother | Thirsa "Teresa" Ann Martin (1808 - 1887) |
| Sibling | Joseph Williamson (1828 - ) |
| Sibling | Henry Williamson (1829 - ) |
| Sibling | Martha "Mary" Jane Williamson (1834 - 1922) |
| Sibling | William Williamson (1837 - ) |
| Sibling | Harriet Caroline Williamson (1838 - 1922) |
| Sibling | John Williamson (1841 - 1863) |
| Sibling | Charles Cagle Williamson (1842 - 1917) |
| Sibling | Gabriel Martin Williamson (1847 - 1925) |
| Sibling | Thirsa "Thurssay" "Sally" Williamson (1850 - ) |
| Sibling | Albert Dardenell "Uncle Durd" Williamson (1852 - ) |