Lea Bierman was the daughter of Mozes Bierman and Rosalie de Leeuwe. She was born on 18 January 1909 in Amsterdam and worked as a domestic servant. On 28 September 1932, she married Mozes Blog in Amsterdam, who was born there on 24 June 1906 as the son of Coenraad Blog and Roosje Stodel. Lea and Mozes had a son on 4 June 1934, named Coenraad.
The Blog-Bierman couple lived at Plantage Muidergracht …