Who dated Sam Giancana?

Judith Exner (January 11, 1934 – September 24, 1999) was an American woman who claimed to be the mistress of U.S. Senator, then U.S. president John F. Kennedy and Mafia leaders Sam Giancana and John Roselli. Several aspects of her claim of having known Kennedy have been verified by documents, phone records, and testimony. She was also known as Judith Campbell Exner, and Judith Campbell.