Both the sisters Lena and Celina Delden were employed at the clothing factory of Hollandia Kattenburg in Amsterdam since half April 1937. Lena, the eldest, was just 17 years of age and her sister Celina was 15 years old. Both the sisters lived at home with their parents Aron Delden and Marianne Waas at Nieuwe Kerkstraat 38 1st floor in Amsterdam. However, when Celina got married on 5 August 1942 t…