Siegmund de Vries was a cattle dealer. He lived in Musselkanaal. His wife survived the war.
The archive of the Stichting Sieraden-Comité contains among other things some correspondence, a statement of the right to inheritance and a list of stolen items of jewellery.
NIOD, Records Stichting Sieraden-Comité, box HF 14, file 230
This person lived alone or no information about family members is known or traceable.