Whitney married Irene Hixon on August 21, 1948. They provided aid to
Vernon Johnson, who pioneered the method of using an intervention to confront
alcoholics and
substance abusers so as to get them professional help for their addictions. They created the Johnson Institute after Johnson helped Irene Whitney through an intervention. Irene Whitney died of
lung cancer in 1986. In 1990 Whitney married Penny Lewis, a professional horse trainer, from whom he was divorced in 1994. In 2005, he married Chief Justice
Kathleen A. Blatz, of the
Minnesota Supreme Court. Whitney died on May 20, 2016.
Horse racing Whitney was involved with the sport of
thoroughbred horse racing for many years. His best-known horse was
Quicken Tree, a California runner in the 1960s whose wins included the
Santa Anita Handicap,
Manhattan Handicap and the
Jockey Club Gold Cup. ==References==