# | Children | Name | Born | Died | Father | Mother | ||
---|---|---|---|---|---|---|---|---|
1 |
| Willem Johannes Cornelis de Heer | Hetty Elizabeth van Kammen | |||||
2 |
| Willem Johannes Cornelis de Heer | Hetty Elizabeth van Kammen | |||||
3 |
| b. Feb 1945 | d. Feb 1945 | Willem Johannes Cornelis de Heer | Hetty Elizabeth van Kammen | |||
4 |
| Willem Johannes Cornelis de Heer | Hetty Elizabeth van Kammen |