 Elizabeth Johanna Dijkgraaf, daughter of Pieter Dijkgraaf and Arieana Bol.Born 23 May 1927 Krimpen aan den IJssel, died 18 Jul 2001 Rotterdam, age 74 years, buried Rotterdam, Begraafplaats Rozenburg Married 27 Jul 1951 Krimpen aan den IJssel, age 24 years (married 49 years) to:  Gerrit van der Werff, age by marriage 26 yearsBorn 13 Nov 1924, died 13 Feb 2012 Rotterdam, age 87 years, buried Rotterdam, Begraafplaats Rozenburg | |||