Willem Sanders was the third son of Sander Sanders and Esther Morpurgo. He was born in Amsterdam on 11 December 1905 and became a tailor by profession. Willem lived at home with his parents until mid 1920 and on 9 August 1920 he left the parental home and took up residence/living space at Celebesstraat 46 III in Amsterdam-Oost, with G. Blom. He then lived at about 6 different addresses in the city…