Jetje Ketellapper was a daughter of Isaac Ketellapper en Leentje Frinkel. She married 26 November 1930 in Amsterdam to Joseph Troeder, a son of Juda Troeder and Geertje Schavrien.
She had still another sister Jetje and two brothers, Marcus and Simon.
City Archive of Amsterdam, archive card of Isaac Ketellapper and website www.wiewaswie.nl.
Biography