 Okke van der Knoop, son of Pieter Jacobs van der Knoop and Aaltje Ruurds Potma.Born 20 Jun 1875 Workum, died 26 Mar 1942 Rotterdam (Schiebroek), age 66 years, buried 29 Mar 1942 Hillegersberg, Nederlands Hervormde Begraafplaats. Occupation: reiziger Married 09 Jun 1904 Brielle, age 28 years (married 37 years) to:  Corstina Dijkgraaf, age by marriage 26 years, daughter of Pieter Dijkgraaf and Willemtje Voogt.Born 06 Oct 1877 Brielle at 04:00 hour, died 06 Apr 1971 Rotterdam, age 93 years Children: 1. Aaltje Martha van der KnoopBorn 16 Mar 1905 Rotterdam, died 23 Sep 1995 Rotterdam, age 90 years 2. Pieter Jacob van der KnoopBorn 22 May 1907 Rotterdam, age 117 years. Occupation: koopman in sportartikelen 3. Willemtje Cornelia van der KnoopBorn 30 Jun 1910 Rotterdam, died 16 Jul 1988 Rotterdam, age 78 years, buried 22 Jul 1988 Rotterdam | |||