Samuel Liefman Muller was unmarried. He lived on the same address with a relative. One of his sisters, Aaltje, with her husband Simon Heiman Frankenhuis, also lived at this address.
In addition, a Jokos file (number 10051) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.