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Ferdinand Henry John Zivcich was the real birth name of Fritzie Zivic, an American welterweight boxer who won the world title in 1933 and 1936. Zivic was born in the small town of Apiro, Italy, in 1913, but his family immigrated to the United States when he was a child. He began boxing as an amateur in the early 1930s and turned professional in 1932.