| | Johannes Wilhelmus Houkes 1915–1978 Bertha Margaretha Peters 1914–1999 | | |
| | Johannes Wilhelmus Houkes 1890–1949 Cornelia van Dijk 1887–1969 | | |
| | Johannes Theodorus "Joep" Houkes 1920–2001 Johanna Wilhelmina Langen 1924–2004 | | |
| | Theodorus Houkes 1892–1978 Francisca Maria Derksen 1892–1984 | | |
| | Hendrina Groenewald 1864–1935 Bartholomeus Jacobus "Bart" Houkes 1863–1951 | | |
| | Johanna Holleman 1842–1901 Petrus Groenewald 1837–1872 | | |