Albert Lodewijk van Zwanenburg, metalware manufacturer and exporter, was a son of Salomon van Zwanenburg and Estella Jacobs. His parents passed way before the war; his mother, Estella Jacobs from Zwolle died in Rotterdam 23 August 1917 as the widow of Salomon Zwanenburg, aged 78 years and was interred in the Jewish Cemetery Toepad in Rotterdam. He had a brother Karl Emil and an unmarried sister Th…