Femmie Montanhes, born 27 April 1910, was a daughter of Elisabeth Lea Root and Isaac Montanhes. She was married 7 February 1934 in Amsterdam to a hairdresser from Den Haag, Jacques Leonhard Léon, who was born 2 December 1904 in Den Haag as son of David Léon and Geertrui Jacoba van der Haak. On 7 June 1935 Femmie and Jacques had a daughter, named Geertrui Jacoba.
The Léon family went living in the Hofmeyerstraat 9 3rd floor in Amsterdam-East. However, on 25 January 1940 Jacques Leonhard Léon passed away there at the age of 36 years. Femmie Leon-Montanhes and her daughter Geertrui Jacoba were both registered in Westerbork on 23 July 1942 and put on transport to Auschwitz on 31 July. On arrival there on 2 August both were immediately kmurdered.
Sources among others: City Archive of Amsterdam, family registration cards of Joseph Zinger and Isaac Montanhes, archive cards of Femmie Montanhes and Jacques Leonhard Léon and the file cabinet of the Jewish Council, registration cards of Femmie Léon-Montanhes and Geertrui Jacoba Léon.