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.

Abraham Joseph Littmann came into the world on November 17, 1869 in Brody/Galicia in a Jewish family.