| | Wilhelm ‘Bill’ Koorengevel 1922–2010 | | | | Cornelis ‘Cor’ Koorengevel 1894–1927 Pieternella Maria ‘Nel’ Wiedlewskij 1900– | | | | Wilhelm Koorengevel 1867–1953 Johanna ‘Anna’ Noordhoek 1869–1959 | | |
| | | Fredrich Adolph Wiedlewskij 1869– Joanna Maria Jacoba Koelman 1874–1932 | | |
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