Born ‎9- May 1863 Oisterwijk, Netherland‎. Son of Nathan Michiel van der Heijden - Zwanenburg and Jetha Jacob van Zwanenberg - de Wit‏

Born ‎9- Jul 1871 Leeuwarden, Netherland, died ‎14-1-1943 Auschwitz-Katowice, Poland‎, 71 or 72 years. Daughter of Abraham Samuel Markus/ Koopma and Jettche Kallman\Kallmann/ Schlos‏