This person lived alone or no information about family members is known or traceable.
In addition, a Jokos file (number 35951) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
According to a list with shops of Jewish owners, compiled by the Amsterdam police in 1940, Izak Rootveldt had a hairdresser's and a cigar shop, address: Utrechtschestraat 8 in Amsterdam.
Abstracts of the police archives which are currently at the Amsterdam municipal archives