Edith Löwenstein was born on July 19, 1903 in Berlin into a Jewish family; she also had an older sister Else.

Fanny Bruck was born in Liegnitz on November 1, 1862, the daughter of Hermann Bruck and his wife Sara.

Siegfried Lohde was born in Gdansk on May 11, 1870, the son of Josef Salomon Lohde and his wife Sabine, née Goldstein.