Hendrik Frenk was the eldest son and first born of Levi Frenk and Leentje van Bueren. He married 5 October 1904 in Rotterdam Leentje Olman from Delft, a daughter of Eliazar Israel Olman and Aaltje Maas. The couple had two children, namely Helena, who has survived the war and Eliazar Israel, who has …