Salomon Roos was the son of Samuel Roos en Klaartje Barnsteijn. He was diamond polisher by trade. He was first married to Berendina le Grand. After she had died in 1920, Salomon Roos married Berendina de Jong.
Salomon Roos ran a guest house at Plantage Kerklaan 7-bovenhuis.
Amsterdam Municipal Archives; record card of Salomon Roos