Abraham Slager was married to Saartje Bollegraaf. The couple had a daughter, Naatje. The family lived at 100 Langestraat in Winschoten. Abraham Slager, who was known as Bram, sold sewing machines.
In addition, a Jokos file (number 54248) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.