Samuel van Crefeld was a son of Israel van Crefeld and Dina Marsman. He married in Amsterdam on 13 November 1902 to Mietje Blitz, daughter of Marcus Blitz and Peirle da Costa da Fonceca.
The couple had five children: Dina, Israel, Marcus (who has survived the war and was married to Gaye Chelem, Bets…
In addition, a Jokos file (number 793) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.