1920's: The Blitz brothers, Belgium

Maurice Blitz and Gerard Blitz were Belgian Water Polo players during 1920’s. They were both members of the Belgian Water Polo National team who won silver in two consecutive Olympic Games, in 1920 and 1924. Maurice Blitz did not leave the Water Polo scene once he retired from competitions. He became an international referee, conducting the Olympic final in 1932, and was a member of the Belgian Olympic Committee and Swimming Federation. Gerard Blitz was swimmer and Water Polo player. In Antwerp, 1920 he won medals in both swimming and Water Polo. He was third in the 100 m backstroke, and was a member of the Belgian team who won silver in the Water Polo tournament. At 1924 Olympics of Paris the Blitz brothers were still part of the Belgian Water Polo squad that won another silver medal.
Source: http://en.wikipedia.org/