| Father | Frederick G Younkin (1763 - 1843) |
| Mother | Catherine Patton (1771 - 1854) |
| Sibling | John C. Younkin (1793 - 1870) |
| Sibling | Christina Younkin (1795 - 1881) |
| Sibling | Magdalena Younkin (1799 - ) |
| Sibling | Frederick F Younkin (1801 - 1885) |
| Sibling | Catharine Younkin (1803 - 1829) |
| Sibling | Henry F. Younkin (1805 - 1880) |
| Sibling | Rebecca Younkin (1807 - ) |
| Sibling | Sarah Sally Younkin (1808 - 1854) |
| Sibling | Nancy Younkin (1810 - 1850) |
| Sibling | Margaret Rebecca Younkin (1813 - 1863) |
| Sibling | Moses Younkin (1815 - 1899) |
| Sibling | Mary "Polly" Younkin (1815 - 1886) |