Gertrud Wachsner was born in Ohlau on October 17, 1887, the daughter of Isdor Wachsner and his wife Jenny née Breith.

Eduard Urmann was born in Czernowitz on July 23, 1883, the son of Israel Traub and Freide Urmann.

Hanna Tworoger came into the world on January 22, 1891 in Haideberg/Posen in a Jewish family.