| Father | Nathaniel Jason Pennington Sr (1829 - 1904) |
| Mother | Susan Hannah Carr (1834 - 1917) |
| Sibling | Isaiah Pennington (1851 - 1870) |
| Sibling | James B. Pennington (1852 - 1852) |
| Sibling | J. B. L. Pennington (1855 - ) |
| Sibling | Virginia Catharine Pennington (1856 - 1888) |
| Sibling | Mary Elizabeth Pennington (1859 - 1891) |
| Sibling | John Pennington (1862 - 1891) |
| Sibling | Martin Vanburen Pennington (1862 - 1944) |
| Sibling | Nathaniel Jason Pennington Jr (1865 - 1944) |
| Sibling | Susan P. Pennington (1867 - 1882) |
| Sibling | Esau Pennington (1869 - 1928) |
| Sibling | Adam Pennington (1871 - 1956) |
| Sibling | Robert Henry Pennington (1876 - 1930) |
| Sibling | Pennington (1904 - 1986) |