 Salomon Jr.'s and Therese's daughter Bertha "Betty" Hertz née Oppenheim married Heinrich David Hertz (born as Hertz Hertz)—their son Gustav Ferdinand Hertz (born as David Gustav Hertz) with his wife Anna Elisabeth née Pfefferkorn later became parents of Heinrich Rudolf Hertz and Gustav Theodor Hertz, who in turn later became the father of Gustav Ludwig Hertz.The main branches of the family converted to Protestantism (Betty Oppenheim and Heinrich David Hertz, and Simon Oppenheim's son Eduard) and Catholicism (Abraham's son ) in the late 19th century.The company he founded, Sal.