Isaac Koopman was a son of Emanuel Koopman and ((516672|Schoontje Levij)0. He married Saartje Springer in Amsterdam on 4 December 1913, a daughter of Samson Springer and Betje Levij.
Isaac was born in a family with nine children, of whom two children have died in childhood. His other siblings, Salom…
In addition, Jokos files (numbers 35173, 8098) on this family or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.