 Jan Dijkgraaf, son of Jan Dijkgraaf and Aplonia Lidewij Lagendijk.Born 16 Aug 1907 Rotterdam, died 24 Apr 1998 Rotterdam, 90 years. Occupation: heeft gediend bij de Koninklijke Marine Married 04 Sep 1931 IJsselmonde (57 years married) to:  Elisabeth Schalk, daughter of Pieter Schalk and Maaike van der Jagt.Born 07 Mar 1906 IJsselmonde, died 17 Dec 1988 Rotterdam, 82 years Children: 1. Aplonia Lidewij "Plony" DijkgraafBorn 02 Apr 1932 Rotterdam, died 23 Sep 2014 Rotterdam, 82 years, buried IJsselmonde, Begraafplaats Hervormde Gemeente Rotterdam | |||