Johanna de Winter was a daughter of Michiel de Winter and Schoontje Mug. She married Mozes Coppenhagen in Rotterdam on 9 August 1939, a son of Salomon Coppenhagen and Sophia Koopman. On 20 December 1942 their daughter Schoontje was born in Camp Westerbork. She was killed in Sobibor on 5 March 1943, together with her mother. Johanna's husband Mozes lost his life in Lublin on 30 November 1943.
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