Het Joodsche Weekblad of August 1941 featured an obituary for Simon van Zweden. The notice was placed by his family and signed by his father. His address was given as 14 Plantage Kerklaan, second floor.
Simon van Zweden was 23 years old when he died. The obituary does not mention that he was killed in Mauthausen.
Het Joodsche Weekblad, 8 August 1941, 11