Abraham married in 1899 in The Hague to Leentje Knegje. They had eight children. One of them died in 1918 and one survived the war.
Addition of a visitor of the website
In addition, a Jokos file (number 30723) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.