Jay North, who starred as the young mischief maker with the characteristic blond cowlick on the 1959-63 CBS comedy Dennis the Menace, has died. He was 73. North died Sunday at his home in Lake Butler, Florida, after years of battling colon cancer, Jeannie Russell, who played Margaret Wade on his show, told The Hollywood Reporter. She called him her “otherworldly brother.” On Screen Gems’ Dennis the Menace, based on the comic strip created by Hank Ketcham, North starred as the well-intentioned but troublesome Dennis Mitchell, the only child of Henry (Herbert Anderson) and Alice (Gloria Henry). He often created...