Cara Williams was an actress known for her roles in movies including “The Defiant Ones” and on TV in “Pete and Gladys.”Williams began appearing in movies in the early 1940s, with credits including “Happy Land,” “Laura,” and “Boomerang.” She had a career highlight in 1958 with “The Defiant Ones;” she was nominated for an Academy Award and a Golden Globe for Best Supporting Actress for her performance as Billy’s mother.