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Zadok Blok, birth 9 Sep 1875 Groningen, Groningen, Nederland, son of Jacob Blok and Berentje or Berendje Gudema
Married 7 Jun 1903 Groningen, Groningen, Nederland to: Esther Nieweg, birth 27 Nov 1876 Groningen, Groningen, Nederland, daughter of Levy Nieweg and Betje Bloemendal |
| 1) Jacob Zadok Blok, birth 26 Mar 1904 Groningen, Groningen, Nederland, died 10 Jul 1942 Mauthausen, Opper-Austria, Austria |
| 2) Bertha Blok, birth 6 Apr 1908 Groningen, Groningen, Nederland |