Jonathan, nicknamed "The Mormon Giant" and billed from Salt Lake City, Utah, is one of the greatest big men ever to compete in the sport of wrestling, having shown amazing agility for his size (such as performing backflips, standing dropkicks, cartwheels, kip-ups and somersaults over the top rope into a standing position) and capturing championships wherever he wrestled.
A second generation star (his father was former wrestler Brother Jonathan), Jonathan made his pro debut in 1949. Over the course of his career, he competed around the world, making stops in Europe, South Africa, Australia and Japan; his greatest accomplishments, however, took place in the United States and Canada, where he wrestled most often. His first championship wins occurred in Montreal with the International Wrestling Association, where he twice captured their International Heavyweight title; Montreal was also the scene of one of his greatest bouts later on, when he faced André the Giant in a September 7, 1972 match billed as the "Battle of the Giants" (André won the match by DQ).
Elsewhere in Canada, Jonathan found more success competing in Toronto's NWA affiliate Maple Leaf Wrestling (where he first teamed with Gene Kiniski to win the Canadian Open Tag Team title, in 1959) and in Winnipeg, Manitoba, where he wrestled for NWA member Alex Turk Promotions (twice winning their International Tag Team title) and for the American Wrestling Association (where he won the World Tag Team title with Verne Gagne in 1967). Jonathan also got a taste of World heavyweight gold when he won the AWA-affiliated Omaha, Nebraska territory's version of the World title three times in 1961.
Canada eventually became home to Jonathan in the early 1960s as he settled in the Vancouver, British Columbia suburb of Langley. Making Vancouver his home base, he competed frequently for NWA All-Star Wrestling, winning five Pacific Coast Heavyweight titles between 1970 and 1977, the NWA World Tag Team title (with Dominic DeNucci) in 1966, and a record 18 Canadian Tag Team titles between 1964 and 1978, as well as challenging for the NWA World Heavyweight Championship against such titleholders as Kiniski, Dory Funk, Jr. and Jack Brisco; he also engaged in feuds with Kiniski and Dutch Savage in All-Star, as well as teaming with them. Late in his career, he appeared as one of the wrestlers in the 1978 Sylvester Stallone movie Paradise Alley.
Jonathan wrestled his final match, teaming with André the Giant and Roddy Piper to defeat The Sheepherders and Buddy Rose in Vancouver on March 10, 1980, before retiring from the ring that year. On November 5, 2005, he appeared at an event in Surrey, British Columbia, presented by Top Ranked Wrestling (prior to its purchase by ECCW) to be honored in a special ceremony for his contributions to the sport. On May 20, 2006, he was inducted into the Professional Wrestling Hall of Fame in Amsterdam, New York.
- Killer Kowalski
- Yvon Robert
- "Nature Boy" Buddy Rogers
- André the Giant
- Gene Kiniski
- Pat O'Connor
- Dutch Savage
- "Bulldog" Bob Brown
- Pedro Morales
Championships and accomplishments
- AWA World Heavyweight Championship (1 time)
- EWU World Super Heavyweight Championship (1 time)
- GPW Heavyweight Championship (1 time)
- IWA World Tag Team Championship (2 times) – with Antonio Pugliese
- IWA World Heavyweight Championship (2 times)
- MWA American Tag Team Championship (1 time) – with Ray Stern
- NWA Canadian Tag Team Championship (Vancouver version) (18 times) – with Kinji Shibuya (1), Roy McClarty (1), Gene Kiniski (1), Jim Hady (1), Haystacks Calhoun (2), Dominic DeNucci (1), Rocky Johnson (1), Sky-Hi Jones (1), Paddy Barrett (1), Johnny Kostas (1), John Tolos (1), Duncan McTavish (1), Steven Little Bear (1), Jimmy Snuka (1), John Anson (1), Dutch Savage (1), and John Quinn (1)
- NWA Pacific Coast Heavyweight Championship (Vancouver version) (5 times)
- NWA World Tag Team Championship (Vancouver version) (1 time) – with Dominic DeNucci
- WWA United States Tag Team Championship (1 time) – with Fred Blassie
- Other Titles
- West Virginia Heavyweight Championship (1 time)