Martin Asch was born in Posen on March 10, 1873, the son of Hermann Asch and his wife Jeanette, née Neustaedter.

Hans Asch was born in Berlin on July 16, 1901, the son of Martin Asch and his wife Clara née Falkenstein; his brothers were Kurt (1900) and Ralph (1918), and his sister Ellen (1909).

Clara Falkenstein was born in Frankfurt am Main on January 26, 1877, the daughter of Emanuel Falkenstein and his wife Emma, née Cohn.

Hans Arnheim was born on January 8, 1881 in

Julius Arnfeld was born on April 25, 1875 in