Abraham van Kleef had a second daughter, Sara van Kleef, born in 1912. She was married to Eliaser Bronkhorst. They lived at the time at another address. Addition of a visitor of the website
In addition, a Jokos file (number 21179) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.