Betje Koopman was a daughter of Emanuel Koopman and Schoontje Levij. She married Zacharias Swaab on 14 January 1920 in Amsterdam, a son of Hijman Swaab and Veronica Cohen.
Betje was born in a family with nine children, of whom two children have died in childhood. Her other siblings, . Isaac, Salomon…
In addition, Jokos files (numbers 10350 and 003411) on this family are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos files reveal that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosent…