| Father | Johannes Frederik Hieftje (1840 - 1900) |
| Mother | Geertrui Jacobsdr HERWEIJER (1846 - 1912) |
| Sibling | Gerrit Hieftje ( - ) |
| Sibling | John HIEFTJE (1884 - 1885) |
| Sibling | Johanna Hieftje (1886 - 1986) |
| Sibling | Willie Hieftje (1882 - ) |
| Sibling | Elizabeth Maike Hieftje (1880 - 1955) |
| Sibling | Neeltje Fredrika Hieftje (1880 - 1927) |
| Sibling | Martie Hieftji (1889 - ) |
| Sibling | Frederick Johannes Hieftje (1875 - 1973) |
| Sibling | Maatje Hieftje (1872 - 1872) |
| Sibling | Jan Johannes Hieftje (1867 - 1925) |
| Sibling | Louis Hieftje (1865 - 1921) |
| Sibling | Kathryn HIEFTJE (1900 - 1918) |
| Sibling | Jacob Hieftje (1863 - 1941) |
| Sibling | Cornelius Hieftje (1862 - 1947) |