Ronald Defeo Jr. Today, Ronald Joseph “Butch” DeFeo, Jr. (born September 26, 1951) is an American mass murderer. He was tried and convicted for the 1974 killings of his father, mother, two brothers and two sisters. The case is notable for being the real life inspiration behind the book and film versions of The Amityville Horror.
At around 6:30 PM on Wednesday, November 13, 1974, 23-year-old Ronald DeFeo, Jr entered Henry’s Bar in Amityville, Long Island, New York and declared: “You got to help me! I think my mother and father are shot!” DeFeo and a small group of people went to 112 Ocean Avenue, which was located near the bar, and found that DeFeo’s parents were indeed dead. One of the group, Joe Yeswit, made an emergency call to the Suffolk County Police, who searched the house and found that six members of the same family were dead in their beds.
The victims were Ronald DeFeo, Sr. (43), Louise DeFeo (42), and four of their children: Dawn (18); Allison (13); Marc (12); and John Matthew (9). All of the victims had been shot with a .35 caliber lever action Marlin 336C rifle at around three o’clock in the morning of that day. DeFeo’s parents had both been shot twice, while the children had all been killed with single shots. Louise DeFeo and her daughter Allison were reportedly the only victims who were awakened by the gunfire at the time of their deaths, and according to Suffolk County Police the victims were all found lying on their stomachs in bed. The DeFeo family had occupied 112 Ocean Avenue since purchasing it in 1965. The murdered members of the DeFeo family are buried in nearby Saint Charles Cemetery in Farmingdale.