Raphael Prins, a son of Andries Prins and Keetje Zwartverwer, married in Zaandam on 25 June 1913 to Mietje Pront, a daugher of Hartog Pront and Sara Weekheim. website www.wiewaswie.nl
In addition, a Jokos file (number 18398) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.