Grietje Kattenburg, a daughter of Meijer Kattenburg and Debora Garf, was born on 23 August 1883 in Amsterdam, where she married Emanuel van Moppes on 30 August 1906. He was a son of Isaac van Moppes and Schoontje Cohen and born on 18 April 1883. He was a diamond cleaver by profession.
Grietje and Emanuel had two sons together, namely Isidore Emanuel on 11 July 1907 and Floris Maurits on 20 April 1…