| Father | Andrew Franklin Dunagan (1812 - 1862) |
| Mother | Emilia Minerva Dempsey (1820 - 1894) |
| Sibling | Joshua Dunagan (1839 - ) |
| Sibling | Thomas Benton Dunagan (1840 - 1910) |
| Sibling | Louisa Dunagan (1842 - ) |
| Sibling | Samuel W. Dunagan (1843 - ) |
| Sibling | Mary F. Dunagan (1846 - 1912) |
| Sibling | Arrena Dunagan (1847 - 1913) |
| Sibling | Delila A. Dunagan (1849 - ) |
| Sibling | Riley Brewster Dunagan (1853 - 1926) |
| Sibling | Marshal Dunagan (1855 - ) |
| Sibling | Lorenzo Dunagan (1856 - ) |
| Sibling | William Dunagan (1860 - 1867) |
| Sibling | Harvey Dunagan (1863 - ) |