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Jay Waverly North Jr. (born August 3, 1951) is an American actor. His career as a child actor began in the late 1950s with roles in eight TV series, two variety shows and three feature films. At age 7 he became a household name for his role as the well-meaning but mischievous Dennis Mitchell on the CBS situation comedy Dennis the Menace (1959–1963), based on the comic strip created by Hank Ketcham. Wikipedia