 Herman Douma PRIVACY FILTERMarried/ Related to:  Name Withheld, daughter of Petrus Johannes Nicolaas "Piet" Dijkgraaf and Petronella Johanna "Nel" van de Luitgaarden. PRIVACY FILTER, 1st married/ related to: Name Withheld, 2nd married/ related to: Herman Douma | |||