Who was the first person to win gold medals in both the Winter and Summer Olympics in different events?

Edward "Eddie" Patrick Francis Eagan (April 26, 1898 – June 14, 1967) was an American sportsman who is notable as being the first, and so far, only person to win a gold medal at both the Summer and Winter Olympic Games in different events. Eagan won his summer gold in boxing and his winter gold in four-man bobsled. Finally, Eagan is one of the few athletes who have competed in both the Summer and Winter Olympic games.

Eagan was born into a modest family in Denver, Colorado. In 1920, he competed as a boxer at the 1920 Summer Olympics in Antwerp, and won the gold medal in the light-heavyweight division. Eagan's other boxing awards include the 1919 AAU title and a British amateur title. He also competed at the 1924 Summer Olympics, but failed to medal, having lost in the first round to Arthur Clifton.

Eagan returned to the Olympics eight years later, this time as a member of the bobsleigh crew of Billy Fiske, who steered to victory at the 1932 Winter Olympics in Lake Placid. Eagan became the second of six Olympians to medal in both Winter and Summer Games, followed by Jacob Tullin Thams (Norway), Christa Luding-Rothenburger (East Germany), Clara Hughes (Canada), and Lauryn Williams (United States).