Alfred Traub was born in Berlin on July 7, 1904, the son of master tailor Ferdinand Efraim Traub and his wife Roza, née Schmidl.

Martin Toeplitz was born in Krone an der Brahe on May 24, 1886, the son of the Privy Councilor of the Institute Oskar Toeplitz and his wife Eveline (Lina) née Frankenstein.

Paul Tawrigowski called Friedländer was born in Berlin on July 7, 1900, the son of Isaak Tawrigowski and his wife Berta née Luft.