Emma van Dam was a daughter of Gombregt van Dam and Mina Hertog. She married Herman Cahn in 1921 in Eindhoven. He died in 1930.
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The widow Emma Cahn-van Dam lived together with her son Maurice Cahn in Eindhoven.
Phocas Kroon, De joodse gemeenschap in Eindhoven 1940-1945 (uitgegeven in eigen beheer 2003) p 56