Sigfried Okker, born 5 April 1894 in Amsterdam, was a son of Jonas Okker and Henriette Gobes. His father passed away on 7 September 1926 and was interred in the Jewish Cemetery at Muiderberg. His mother then widowed, moved from Kazernestraat to Plantage Middenlaan, where she moved in with her brother Loudewijk Gobes.
As far as can be deduced from the archives, Sigfried would have been married 6 Ap…