| Father | Henry Arnold (1814 - 1903) |
| Mother | Eva Haigler (1816 - 1883) |
| Sibling | Rachel Arnold (1835 - ) |
| Sibling | Elizabeth Arnold (1836 - 1872) |
| Sibling | Mary Catherine Arnold (1837 - 1908) |
| Sibling | Margaret A. Arnold (1841 - 1917) |
| Sibling | William Henry William Arnold Sr. (1841 - 1922) |
| Sibling | Sidney Jane Arnold (1847 - 1876) |
| Sibling | Henry H. Arnold (1849 - 1894) |
| Sibling | Sarah Elizabeth Arnold (1851 - 1920) |
| Sibling | Milton Nelson Arnold (1853 - 1915) |
| Sibling | Benjamin Franklin Arnold (1856 - 1934) |
| Sibling | Amanda Arnold (1857 - 1932) |