He married the Actress Jean Wallace in 1951. Wallace, formerly married to actor Franchot Tone, co-starred with Wilde in several films, including The Big Combo (1955), Lancelot and Guinevere, aka Sword of Lancelot (1963), and Beach Red (1967). Her two children from her marriage to Tone became Wilde's stepsons. They also had a son together, Cornel Wallace Wilde Jr. (born December 19, 1967). They divorced in 1981.