Roelof Frank, born in Steenwijk in 1909, was a son of Joachim Salomon Frank and Dora Heijmans. 22 March 1935 he married in Oss Betty Maijer from Brambauer (Germany), a daughter of Sigmund Maijer and Johanna Rosenbaum. They lived at Spoorlaan 66 in Oss where on 15 August 1938 their son Joachim was born.
Betty Mayer was a doctor's assistant and from 1 August 1942 she was principal and in charge of…