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 …