| Father | Julius David Northrup (1829 - 1905) |
| Mother | Ellen Mary Luse (1834 - 1922) |
| Sibling | Ellen Mary Northrup (1862 - 1949) |
| Sibling | Chauncey Earl Northrup (1864 - 1918) |
| Sibling | William Northrup (1861 - ) |
| Sibling | Burt Northrup (1863 - ) |
| Sibling | George Henry Northrup (1870 - ) |
| Sibling | Ettie Frances Northrup (1868 - 1960) |
| Sibling | Lydia Louisa Northrup (1853 - 1904) |
| Sibling | Oliver Julius Northrup (1852 - 1919) |
| Sibling | Lillian Sophia Northrup (1873 - ) |
| Sibling | Adelbert Francis Northrup (1879 - 1958) |
| Sibling | Melinda Ann Northrup (1850 - 1853) |
| Sibling | Charles Josephas Northrup (1856 - 1863) |
| Sibling | Francis B Northrop (1878 - ) |
| Sibling | Sarah E Northrop (1869 - ) |
| Sibling | William W. Northrup (1875 - ) |