Born ‎± 1905 Rotterdam, Netherland‎. Son of Joseph Frenk - van Bueren and Esther Querido - van der Sluis‏

Born ‎5- Feb 1907 Amsterdam, Netherland‎, ‎1st marriage/ related to: Levi Frenk - Querido, ‎2nd marriage to: Johannes Nicolaas Straatman