Esther van Praag was the eldest of the two daughters of Louis van Praag and Rachel Polak. She was unmarried and lived since 2 February 1940 with her parents at home at Blasiusstraat 37 1st floor in Amsterdam. Up from 1930 her parents lived in Rotterdam for ten years; they returned in Amsterdam in 1940 but Esther left Rotterdam already in October 1939 where she came to live in with the family of Sa…