Athlete: Reginald "Reggie" Doherty, Venus and Serena Williams
Country: Venus and Serena Williams (United States), Reginald "Reggie" Doherty (United Kingdom)
Date: Doherty won gold medals in the men's doubles and mixed doubles (1900 Paris Olympics) and men's doubles (1908 London Olympics). The Williams sisters also have a total of three gold medals in the women's doubles competition during the 2012 London Olympics, the 2000 Sydney Olympics and the 2008 Beijing Olympics.
(Photos from left: Central Press/Getty Images, Paul Gilham/Getty Images)