Mighty Jumbo (wrestler)
American professional wrestler

Samuel Thomas Hesser (1923–1974) was an American professional wrestler who competed throughout the United States and Canada as Mighty Jumbo and Man Mountain Dean Jr..
Professional wrestling career
Hesser served in the United States Marines during World War II before he became a wrestler in 1950. He made his debut in Chicago as Man Mountain Dean Jr.
In 1952, he debuted for Maple Leaf Wrestling in Toronto. He lost to Antonio Rocca in a Best 2 Out of 3 Falls match. He stayed in Toronto until 1953 and went to Minnesota.
During his career, he continued to work in New York, Texas and California. At some point in his career, he changed his name to Mighty Jumbo. In 1959, he worked for Capitol Wrestling Corporation in New York City.
He returned to Toronto in 1960.
Begin with the source’s own compact description: “Mighty Jumbo (wrestler)” is american professional wrestler. The dossier treats that line as a proposition to test through Mighty, Jumbo and wrestler, not as a finished interpretation.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 26, 2026. The linked authority identifier is Q131630351. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1923, 1974, 1950 and 1952.
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This entry incorporates text from “Mighty Jumbo (wrestler)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.