| Father | Hendrik Martins KRAMER (1846 - 1909) |
| Mother | Jetje Teakes Boersma (1849 - 1920) |
| Sibling | Henry KRAMER Sr (1891 - 1971) |
| Sibling | Dirkje "Dora" KRAMER (1882 - 1906) |
| Sibling | Martin Wijbe KRAMER (1881 - 1881) |
| Sibling | Martin Hendriksz KRAMER (1883 - 1934) |
| Sibling | Trijntje Hendriksd KRAMER (1879 - ) |
| Sibling | Taeke "Tetje" KRAMER (1878 - 1964) |
| Sibling | Tecke Hendriksz KRAMER (1874 - 1941) |
| Sibling | Oenze Hendriksz KRAMER (1888 - 1889) |
| Sibling | Eeke "Ella: Hendriksdr KRAMER (1872 - 1950) |
| Sibling | Neeltje "Nellie" KRAMER (1870 - 1962) |