Campbell was twice married and known for her many lovers. She was first married to the American writer
Norman Mailer (1923–2007) in 1962. He described her as "a remarkable girl, almost as interesting, complex and Machiavellian" as himself.
Gore Vidal asked her why she became involved with Mailer and she replied "Because I never slept with a Jew before." they were the parents of
Kate Mailer (b. 1962), who is a writer and an actress. In 1967, she married her second husband, John Sergeant Cram III (1932–2007), a grandson of
John Sergeant Cram and
Anthony Joseph Drexel Jr., and great-grandson of railroad tycoon
Jay Gould. They divorced in 1968 after becoming the parents of
Cusi Cram (b. 1967), who is also an actress, a Herrick-prize-winning playwright, and an Emmy-nominated writer for the children's animated television program,
Arthur. However, it was later revealed that Cusi was not Cram's daughter, but, in fact, the daughter of a Bolivian ambassador to the United Nations. Her funeral was held at St. Joseph's Church on
6th Avenue in New York City. ==In popular culture==