Robert Defeo JR.

Ronald Defeo is a Famous American murderer. He Was Convicted for the 1974 killings of his father and mother,two brothers and two sisters.
== The Murder Of The Defeo Famliy ==
At around 6:30 on the evening of November 13, 1974, Ronald DeFeo, Jr. burst into Henry's Bar in Amityville, Long Island, New York and declared: "You got to help me! I think my mother and father are shot, it's real bad!" DeFeo and a small group of people went to 112, soon changed to 108 Ocean Avenue, which was located not far from the bar, and found that DeFeo's parents were indeed dead, one bullet wound. One of the group, Joe Yeswit, made an emergency call to the Suffolk County Police Department who searched the house and found that six members of the same family were all dead in their beds.
The victims were car dealer 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  rifle  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. The DeFeo family had occupied 112 Ocean Avenue since purchasing it in 1965.
Ronald DeFeo, Jr. was the eldest son of the family, and was also known as "Butch". He was taken to the local police station for his own protection after suggesting to police officers at the scene of the crime that the killings had been carried out by a mob hit man named Louis Falini. However, an interview with DeFeo at the station soon exposed serious inconsistencies in his version of events, and the following day he confessed to carrying out the killings himself. He told detectives: "Once I started, I just couldn’t stop. It went so fast."
== Trial And Coviction ==
DeFeo's trial began on October 14, 1975. He and his defense lawyer William Weber mounted an affirmative defense of insanity, with DeFeo claiming that voices in his head had urged him to carry out the killings. The insanity plea was supported by the psychiatrist for the defense, Dr. Daniel Schwartz. The psychiatrist for the prosecution, Dr. Harold Zolan, maintained that although DeFeo was an abuser of heroin and LSD, he had antisocial personality disorder and was aware of his actions at the time of the crime.
On November 21, 1975, DeFeo was found guilty on six counts of second-degree murder. On December 4, 1975, Judge Thomas Stark sentenced Ronald DeFeo, Jr. to six consecutive sentences of 25 years to life.
DeFeo is currently held in Green Haven Correctional Facility, Beekman, New York, and all of his appeals to the parole board to date have been turned down.