The writer/producer passed away at his home in Sherman Oaks, California, on Sunday.
Married... With Children star Ed O'Neill says, "He had a very original way of thinking in terms of comedy. He was a brilliant comedic writer."
Born in Brooklyn, New York, in 1947, Leavitt graduated with a degree in journalism from the University of Miami and started his career as a reporter in Florida.
In 1977, he started to write for the Adam Arkin TV sitcom Busting Loose.
Leavitt went on to produce shows including Laverne & Shirley, The Jeffersons and Silver Spoons.
But he will be best remembered for creating Married... With Children in 1987. The show, about a misanthropic salesman and his family life at home, ran for 10 years.
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