Elizabeth van Creveld was a daughter of Samuel van Creveld and Sophia Roos. She was divorced from Ruben van der Hoek.
Haags Gemeentearchief, overlijdensakte Elizabeth van Creveld
In addition, a Jokos file (number 60486) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.