Claim: Margaret Osborne duPont was a Gemini.
Evidence: Margaret Osborne duPont -LRB- born Margaret Evelyn Osborne ; March 4 , 1918 -- October 24 , 2012 -RRB- was a World No. 1 American female tennis player.
Under the tropical zodiac , the sun transits this sign between May 21 and June 21.