Simon Duka was a son of ((456661|Joseph Duka) and Hanna Lopes Dias, who was deceased in 1921. He married Bertha Gokkes in Amsterdam on 21 June 1922, a daughter of Salomon Meyer Gokkes and Rachel Spreekmeester.
City Archive of Amsterdam, family registration card of Joseph Duka and archive card of Salomon Meyer Gokkes..
Biography