Abraham Jacobs was a son of Meijer Jacobs and Leentje Kokernoot. He married Evalina Bartels in 1939 in Amsterdam.
Stadsarchief Amsterdam, archiefkaart Abraham Jacobs
In addition, a Jokos file (number 16506) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.