Home Martial artists John Williams John Williams Martial artist Dr. John "Gray Wolf" Williams became the oldest active professional mixed martial artist when at age 70, he made his professional fight debut on July 24, 2010. Personal facts Birth dateJanuary 01, 1940 Birth placeCanada facebook tumblr linkedin twitter reddit google+ Search Topical connections Adam BraidwoodAmerican football player Alwyn MorrisAthlete Alexis WawanoloathPolitician John Williams on Wikipedia John Williams