Samuel van Collem was a son of David van Collem and Rachel Olivier. He married Grietje Moffie on 5 June 1901 in Amsterdam, a daughter of Barend Moffie and Klaartje Kijl.
The couple had four children: besides the here mentioned David and Willem there were Benjamin en Rachel who lived at other address…
In addition, a Jokos file (number 20619) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.