| Grabenkamp, Catharine Margarethe | Helmers | Grabenkamp Johann Heinrich | 1932 |
| Grabenkamp, Friedrich Wilhelm | 1963 | ||
| Grabenkamp, Heinrich Hermann | Grabenkamp Johann Heinrich | 1902 | |
| Grabenkamp, Henriette | Rather | Grabenkamp Friedrich Wilhelm | 1966 |
| Grabenkamp, Joh.s Diedr. Anton | 1915 | ||
| Grabenkamp, Johann Carl | 1917 | ||
| Grabenkamp, Johann Heinrich | 1944 | ||
| Grabenkamp, Katharine Margarete | Grabenkamp Johann Heinrich | 1906 | |
| Grabenkamp, Mathilde Ida Christine | 1909 | ||
| Grabenkamp, Richard Diedrich | 1913 |