Nathan Zwaap, a son of Mozes Zwaap and Rachel Bos, married 30 March 1932 in Amsterdam to Jeannette Ketellapper, a daughter of Abraham Ketellapper and Vrouwtje Kloot. website www.wiewaswie.nl.
In addition, a Jokos file (number 51450) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.