Abraham Bierman and Leentje Abas had six children: Isaac, Klaartje, Heiman, Rachel (died at an early age), Elisabeth and one child that survived the war.
Addition of a visitor of the website
In addition, a Jokos file (number 31795) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.