 Name Withheld, son of Johannes Leonardus "Jan" Dijkgraaf and Maria Margaretha "Mies" van der Putten. PRIVACY FILTERMarried to:  Name Withheld, daughter of Adrianus Leonardus Schapers and Elisabeth Pieternella Anthonia Muilman. PRIVACY FILTERChildren: 2. Name Withheld PRIVACY FILTER3. Name Withheld PRIVACY FILTER | |||