Entertainment | John Henson Muppets' John Henson Dead at 48 'Sudden massive heart attack' kills Jim Henson's youngest son By Polly Davis Doig Posted Feb 16, 2014 5:57 AM CST Copied John Henson, son of the late Jim Henson, in Lake Buena Vista, Fla., in this 1990 file photo. Henson died of a "massive heart attack" at his home in Saugerties, NY, on Friday, Feb. 14, 2014. (AP Photo/FILE) John Henson, the youngest son of Muppets' creator Jim Henson and a puppeteer himself, has died of a massive heart attack at the age of 48, reports People. The Jim Henson Company confirmed Henson's death via a Facebook statement, saying that he died Friday "while at home with his daughter" in Saugerties, NY. Henson, who served on the board of his father's company, leaves two daughters and a wife. Read These Next New Fox star, 23, misses first day after car troubles. Iran's supreme leader makes first public comments since ceasefire. Her blood isn't compatible with anyone else's. Man accused of killing his daughters might be dead. Report an error