| Johanna Elizabeth Hammann | |
| G: | 29 mrt 1934 |
| Rotterdam | |
| Johanna Catharina Hammann | |
| G: | 28 apr 1935 |
| Rotterdam | |
1917-
| Johanna Justina Lems | |
| G: | 24 feb 1917 |
| Rotterdam | |
| Claus Jacob Peter Hammann | |
| H: | 7 mrt 1934 |
| Rotterdam | |
|
1890-1978
| Catharina Hendrika de Vrijer | |
| G: | 15 jun 1890 |
| Rotterdam | |
| O: | 16 mei 1978 |
| Rotterdam | |
| Herman Berend Lems | |
| H: | 17 jan 1917 |
| Rotterdam | |