1914-2005
| Geertruida Adriana Barbara Schalk | |
| G: | 1914 |
| Heerlen | |
| O: | 2005 |
| Breda | |
-1970
| Bertus Koppijn | |
| G: | Amsterdam |
| H: | Ja, datum echter onbekend |
| O: | 27 dec 1970 |
1916-2008
| Leonarda Louisa Schalk | |
| G: | 1916 |
| Semarang, Nederlands Indi | |
| O: | 2008 |
1921-1994
| Adriana Anthonia Johanna Schalk | |
| G: | 1921 |
| Soerakarta, Nederlands Indi | |
| O: | 1994 |
| Heerlen | |
1925-2005
| Klaas Ijkema | |
| G: | 1925 |
| Oudehaske, Haskerland (Fr) | |
| H: | 1951 |
| Davos, Graub | |
| O: | 2005 |
| Heerlen | |
|
1892-1975
| Ludovicus Cornelius Adrianus Schalk | |
| G: | 1892 |
| Breda | |
| O: | 1975 |
| Breda | |
1893-1966
| Barbara Josephina Tiggelman | |
| G: | 1893 |
| Breda | |
| H: | 1915 |
| Breda | |
| O: | 1966 |
| Breda | |