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 Samuel Vorst and his wife Klara Freia Oudkerk at Sarphatistraat 107 1st floor. After her parents arrived 27 January 1940 at Blasiusstraat, Esther came back to her parents there too on 2 February 1940.
Esther was employed as sales lady of leather goods and was a pedicure and manicure. However from 4 January 1943 she worked as cleaning lady at the N.I.H.S. (Israelitic Main Syangogue) at Jonas Daniel Meijerplein. On 9 April 1942 she was carried off, together with her parents to Westerbork where she and her parents ended up in barrack 68. There also stayed her sister Suze and her husband Jacob Mozes Rood.
On 20 April werd Esther van Praag, together with her sister and her husband Jacob Mozes Rood, was put on transport to Sobibor, where on arrival there on 23 April 1943, just as her sister and brother-in-law, she was immediately killed.
City Archive of Amsterdam, archive cards of Louis van Praag, Esther van Praag, Suze van Praag, Jacob Mozes Rood; City Archive of Rotterdam, family registration card of Louis van Praag and the file cabinet of the Jewish Council, registration cards of Esther van Praag, Louis van Praag, Rachel van Praag-Polak, Suze Rood-van Praag and Jacob Mozes Rood.