Dina van Praag was a daughter of Gerrit van Praag and Esther Oudkerk, a family with six children, of which her brothers Meijer and Hijman died in the Holocaust. Dina married in Den Helder on 18 October 1899 to Meijer Gerrit Oudker, who passed away already in 1935. Besides Esther and Gerard, the couple had four other children: Gerrit, Henriette, Louise and Hermand who all have died in childhood.
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