Willem Mozes de Koning got engaged on 25 October 1939 to Johanna Martina Laue. She passed away on 27 February 1944.
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Barend de Koning and Mina van Gelderen married on 3 March 1915 in Leiden. They had five children of which two died before the war at a young age. The remaining three children, Anna (born in 1915), Rosetta (born in 1917) and Willem Mozes (born in 1919) didn't survive the war.
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