Robert James Fitzsimmons (born 26 May 1863, Helston, Cornwall, England – died 22 October 1917, Chicago, Illinois), Cornish professional boxer who was the sport's first three-division world champion. He achieved fame for beating "Gentleman Jim" Corbett (the man who beat John L. Sullivan), and he is in The Guinness Book of World Records as the lightest heavyweight champion, weighing just 167 pounds when he won the title. Nicknamed Ruby Robert and The Freckled Wonder, he took pride in his lack of scars and appeared in the ring wearing heavy woollen underwear to conceal the disparity between his trunk and leg-development.