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 been killed in the Shoah.
Hendrik Frenk and Leentje Olman lived since 30 March 1928 still as a couple at the address Zomerhofstraat 37-a in Rotterdam, but they divorced some years later on 29 May 1933 by verdict of the District Court of Rotterdam. The divorce has been registered in the Civil Registry on 11 August 1933. After having stayed a short time in Den Haag, Damasstraat 45, the new address of his ex-wife since 18 July 1933, as also from his daughter, who moved there too with her husband after her marriage on 5 July 1933, Hendrik lived alone in Rotterdam at the address Diergaardesingel 39-b.
Hendrik was born into a family with another fourteen siblings; three of them have died in infancy, four have died already before the war, six survived the war only Hendrik self and his sister Rosina have been killed in the Shoah. Also his father died during the war; he passed away in Camp Westerbork and has been interred in Assen,
Hendrik self has been deported from Camp Westerbork to Auschwitz on 12 October 1942, where he has been killed immediately upon arrival there on 15 October 1942. Also his ex-wife was killed in Auschwitz on that same day.
City Archive of Rotterdam, family registration cards of Hendrik Frenk, Levi Frenk and Leentje Olman; index marriages Rotterdam, domicile/street records of the De Quackstraat 64-c and Diergaardesingel 13-b and the file cabinet of the Jewish Council of Amsterdam, record of Hendrik Frenk.