Salvatore Vincent "Bill" Bonanno (November 5, 1932 – January 1, 2008) was the son of Cosa Nostra boss Joseph Bonanno. Although his father never intended for him to be the underboss of the Bonanno crime family, his appointment to high positions in the syndicate precipitated a "mob war" which led to the Bonanno family's exile to Arizona. Later in life, he became a writer and produced films for television about his family.
Bill Bonanno was the first child of Joseph and Fay (née Labruzzo) Bonanno. Bill first attended school in Brooklyn. In 1938, after his father purchased property in Hempstead, Long Island, he next attended school there after the family relocated. At age 10, Bill developed a severe mastoid ear infection. To aid in treating this ailment, his parents enrolled him in a Catholic boarding school in the dry climate of Tucson, Arizona.
Bill also attended Tucson High.
Between 1950 and 1952, Bill studied agriculture at the University of Arizona, but never graduated. On August 18, 1956, Bill married Rosalie Profaci, niece of Profaci crime family boss Joseph Profaci. Designed to cement an alliance between the two crime families, the sumptuous wedding had 3,000 guests.DeCavalcante crime family boss Sam DeCavalcante later remarked on Bill's poor treatment of Rosalie: "It's a shame; the girl wanted to commit suicide because of the way he treated her". Bill and Rosalie eventually had four children; Charles, Joseph, Salvatore, and Felippa ("Gigi"); Charles was adopted by Bonanno and his wife in 1958.
Bill's first ambition (after a try at law school) was to manage the legitimate end of Joseph's farms, factories, and the real estate empire. In 1954, Bill was inducted as a "made man" into the Bonanno family. In later years, Joseph appointed him as family consigliere. However, many family members felt that Bill lacked experience and was too intellectual to lead effectively. These tensions only worsened when Bill advised his father against involving the family in the illegal narcotics trade.