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Willem Koster, birth 6 Jun 1891 Amsterdam, died 28 Jan 1944 Auschwitz, Polen, occupation: leraar Middelbaar Onderwijs, accountant, son of David Willem Koster and Abigael Delmonte
to: Betsy Abraham van Creveld, birth 8 Jul 1884 Amsterdam, died Dec 1917 Amsterdam, buried 23 Dec 1917 Amsterdam, daughter of Abraham van Creveld and Heintje Israel Bos |
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1) NN Koster details excluded |
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Willem Koster
to: Flora Hertz, birth 21 Apr 1892 Sittard, died 28 Jan 1944 Auschwitz, Polen, daughter of Sigmund Hertz and Louise Hellendag |
| 1) Louise Abigael Koster, birth 14 Dec 1927 Amsterdam, died 28 Jan 1944 Auschwitz, Polen |
| 2) David Sigmond Koster, birth 21 Nov 1931 Amsterdam, died 28 Jan 1944 Auschwitz, Polen |