Salomon van Os was the son of Joseph van Os and Vogeline de Rosa. He was married in Amsterdam on 5 August 1942 to Femmina Nikkelsberg. They had no children. The couple lived at 17 Jodenbreestraat, third floor, in Amsterdam.
NIOD, Records Stichting Sieraden-Comité, box HF 15, file 225 and City Archive of Amsterdam, archive card of Joseph van Os.