| Father | John Calvin Williamson (1811 - 1857) |
| Mother | Jerucia Francis Williamson (1814 - 1866) |
| Sibling | Mary "Millie" Williamson (1831 - 1877) |
| Sibling | Susanah "Susan" Williamson (1833 - ) |
| Sibling | John Calvin Williamson Jr. (1835 - 1875) |
| Sibling | Charles Cogland Williamson (1839 - 1861) |
| Sibling | David Crockett Williamson (1842 - ) |
| Sibling | Thursa Catherine "Sarah" Williamson (1846 - 1871) |
| Sibling | Harriet Williamson (1848 - 1871) |
| Sibling | Robert Henry "Uncle Bob" Williamson (1851 - 1914) |
| Sibling | Nancy Williamson (1854 - ) |
| Sibling | Medline Meriah Williamson (1857 - 1941) |
| Sibling | Isabelle Williamson ( - ) |