The couple had two daughters who lived elsewhere: Esther Groen-van Cleef and Marianne Boesenach-van Cleef. These daughters didn't survive the war.
One child, who resided at another address, survived the war.
Addition of a visitor of the website.
In addition, a Jokos file (number 6633) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.