Willem Salomon Leon Beek was the eldest of the six children of Leon Salomon Beek and Mietje Oudkerk. He was born in Den Helder on 16 January 1908 and he earned his living as a draper.
In January 1934, the then unmarried Willem Salomon Leon Beek came from Den Helder to Amsterdam. He lived there at various addresses, including Plantage Middenlaan 40, Plantage Parklaan 1 and Biesboschstraat 68. On 17…