I learned about an inspiring Hungarian waterpolo player who won several olympic gold medals despite losing much of one leg due to a childhood accident involving a streetcar. His name was Oliver Halassy and he picked up his third gold medal at the Berlin Olympics back in 1936.
Here's some more info about him: "He was considered the greatest "halfback" of the 1930's. Even more remarkable was Halasy's swimming performance with one leg. He was the European Champion at 1500 meters and won 25 Hungarian National titles in swimming. He was a popular natural leader with a great personality. Ironically, though his handicap exempted him from military service, he was shot by a Russian soldier in 1946 while returning to his home by taxi late at night."