Ernst Koopmann was born into a Jewish family in Bremen on February 14, 1902. He became a merchant, moved to Berlin and married Betty Scharlinski, who was born in Berlin on August 25, 1905. Their daughter Renate was born on July 23, 1931.

Johanna Lewin was born in Beelitz on April 14, 1902, the daughter of Selig Lewin and his wife Therese.

Ursula Klemann was born in Berlin on March 19, 1920. Her original name was Schmid. She was brought to

Paul Walter Klemann was born on July 17, 1895 in the Silesian