| Father | Peter Joseph Fielis (1783 - 1861) |
| Mother | Magdalena Manderbach (1796 - 1853) |
| Sibling | Elizabeth Fielis (1813 - 1882) |
| Sibling | Catherine Fielis (1815 - 1835) |
| Sibling | William Theodore Fielis (1816 - 1888) |
| Sibling | Maria Fielis (1818 - 1898) |
| Sibling | Henry Mathias Fielis (1821 - 1868) |
| Sibling | Martin Manderbach Fielis (1823 - 1906) |
| Sibling | Matilda Margaret Fielis (1825 - 1877) |
| Sibling | Edward Reuben Fielis (1827 - 1834) |
| Sibling | Henrietta Sophia Fielis (1829 - 1836) |
| Sibling | Louisa Ann Fielis (1833 - 1867) |
| Sibling | Thomas Benton Fielis (1835 - 1930) |