Izak Roodveldt was a son of (9488336|Emanuel Roodveldt)) and Rebecca Voet. He married 23 October 1940 in Amsterdam to Esther Speijer, a daughter of Isaac Speijer and Marianne Schenkkan.
City Archive of Amsterdam, archive card of Emanuel Roodveldt and an addition of a visitor of the website .
In addition, a Jokos file (number 32793) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.