Walter Brack (December 20, 1880 – October 20, 1919) was a German backstroke and breaststroke swimmer who competed in the 1904 Summer Olympics. In the 1904 Olympics he won a gold medal in the 100 yard backstroke and a silver medal in the Men's 440 yard breastroke. He was born and died in Berlin.
Fritz Albert Erich "Ete" Rademacher (9 June 1901 – 2 April 1979) was a German breaststroke swimmer and water polo goalkeeper who competed at the 1928 and 1932 Olympics. In 1928 he was a member of the German water polo team that won the gold medal, he also won a silver medal in the 200 metres breaststroke. Four years later he won another silver medal with the German water polo team.