| Gerhard Jan Eduard Grönefeld |
| Gerhard Jan Eduard Grönefeld | |
| G: | 21 aug 1929 |
| Oldenzaal | |
| O: | 1997 |
| Johanna Maria Geertruida Grönefeld |
| Johanna Maria Geertruida Grönefeld | |
| G: | 14 nov 1944 |
| Oldenzaal | |
| O: | 2007 |
|
| Johanna Berendina Geertruida Heerink |
| Johanna Berendina Geertruida Heerink | |
| G: | 16 jun 1902 |
| Enschede | |
| O: | Ja, datum echter onbekend |
| Johan Heinrich Gerhard Louis Grönefeld |
| Johan Heinrich Gerhard Louis Grönefeld | |
| G: | 14 jul 1896 |
| Oldenzaal | |
| H: | 3 jul 1925 |
| Oldenzaal | |
| O: | 23 nov 1974 |
| Oldenzaal | |