1. | Willem Kaptein was born 18 Jul 1887, Berkel en Rodenrijs; died 14 Nov 1975, Berkel en Rodenrijs. Willem married Charlotta Cornelia Helena van der Velden 19 May 1915, Rotterdam, Netherlands. Charlotta (daughter of Roelof Pieter van der Velden and Elizabeth van Essel) was born 16 Sep 1893, Rotterdam, Netherlands; died 30 Dec 1950, Berkel en Rodenrijs. [Group Sheet]
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2. | Albertina Johanna Kaptein ![]() Albertina married Arend van der Knaap 2 May 1956, Berkel en Rodenrijs. Arend was born 25 Jul 1929, Zevenhuizen. [Group Sheet]
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3. | Willem van der Knaap ![]() |