In which year was this American heavyweight boxer born who was active in the 1950s through the 1970s, and was defeated by the former Canadian professional boxer George Chuvalo?
George Chuvalo: George Louis Chuvalo, CM (born September 12, 1937) is a retired Canadian professional boxer who was a five-time Canadian heavyweight champion, and two-time world heavyweight title challenger. Cleveland Williams: Cleveland "Big Cat" Williams (June 6, 1933 – September 3, 1999) was an American heavyweight boxer who fought in the 1950s through the 1970s.
i don't know