
| Dirk Hermanus de Groot | |
| G: | 29 sep 1901 |
| Rotterdam | |
| Johanna Hendrika de Groot | |
| G: | 28 dec 1902 |
| Rotterdam | |
| O: | 20 dec 1907 |
| Rotterdam | |
| Lucas Adrianus de Groot | |
| G: | ca. 1904 |
| Rotterdam | |
| Johanna Maria de Keijzer | |
| G: | ca. 1903 |
| Rotterdam | |
| H: | 8 nov 1923 |
| Rotterdam | |
|
| Gertrud Elisabeth van Alen | |
| G: | ca. 1881 |
| Emmerik, Pruisen | |
| Lucas Adrianus de Groot | |
| G: | 4 sep 1877 |
| Rotterdam | |
| H: | 3 apr 1901 |
| Rotterdam | |
| Joseph Palms | |
| H: | 31 jul 1924 |
| Rotterdam | |