 Riet van Koolwijk Married/ Related to:  Douwe Hettinga, son of Mebius Nicolaas Hettinga and Boukje Franses de Boer.Born 3 Mar 1916 Warga, died 28 May 1989 Renkum, age 73 years, 1st marriage to: Maria Wilhelmina Heinen, 2nd married/ related to: Riet van Koolwijk | |||