Johanna Maria Christophina Ridderhof
| Family | Pedigree | Reports |
| Johanna Maria Christophina Ridderhof |
| b. 22 Aug 1912 |
| d. |
| Cornelis Johannes Ridderhof |
| b. abt 1887 |
| d. |
| Apolonia Maria de Groot |
| b. |
| d. |
| Family | Pedigree | Reports |
| Johanna Maria Christophina Ridderhof |
| b. 22 Aug 1912 |
| d. |
| Cornelis Johannes Ridderhof |
| b. abt 1887 |
| d. |
| Apolonia Maria de Groot |
| b. |
| d. |