Roosje Naarden, a daughter of Jochem Naarden and Rachel Waas, married 20 October 1920 in Amsterdam to Jacob de Jong, a son of Abraham de Jong and Maaike Cohen. website www.wiewaswie.nl.
In addition, a Jokos file (number 36367) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.