Gezin: Willem Frederik VAN HEEMSKERCK DÜKER / Gretha RÖRIK (F6)
getr. 1955Dr. Jan Herman VAN HEEMSKERCK DÜKER (1885-1957) 
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Alida Jozina PLANTENGA (1889-1957)
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| Jan Herman VAN HEEMSKERCK DÜKER (1913-1923) |
Jan VAN HEEMSKERCK DÜKER (1915-1976)  |
| Petronella VAN HEEMSKERCK DÜKER (1919-2009) |
| Alida Josina VAN HEEMSKERCK DÜKER (1921-1987) |
| Johannes Cornelis RÖRIK (1908-1982)
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| Jannetje SPANJER (1906-1994)
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| Letty RÖRIK (1939- ) |
| Willem Frederik VAN HEEMSKERCK DÜKER (1928-2010)
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| Gretha RÖRIK (1929- )
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| Remco VAN HEEMSKERCK DÜKER (1957- ) |
| Jeroen VAN HEEMSKERCK DÜKER (1959- ) |
| Michiel VAN HEEMSKERCK DÜKER (1961- ) |