| Father | Ira Ellis Gentry Sr (1804 - 1883) |
| Mother | Elisabeth S Vaughan (1806 - 1882) |
| Sibling | William Haywood Gentry (1826 - 1914) |
| Sibling | John Wesley Gentry (1828 - 1923) |
| Sibling | Harriet Gentry (1830 - 1899) |
| Sibling | Ira Bonaparte Gentry (1834 - 1931) |
| Sibling | Thomas B Gentry (1838 - ) |
| Sibling | Elizabeth Ann Gentry (1840 - ) |
| Sibling | Raleigh Gaston Gentry (1842 - 1921) |
| Sibling | Sidney Bunkus Gentry (1846 - 1920) |
| Sibling | Ivy B. Gentry (1848 - 1931) |
| Sibling | Lucy E Gentry (1871 - ) |
| Sibling | Lilla B Gentry (1874 - ) |
| Sibling | Oscar T Gentry (1878 - 1953) |