The DeFeo family was an American family that lived in Amityville, New York, in the 1970s. They gained notoriety after the tragic events of November 13, 1974, when six members of the family were murdered in their home. The eldest son, Ronald DeFeo Jr., was convicted of the killings and claimed he was driven by voices in the house. The DeFeo murders became infamous and inspired numerous books and films, including the well-known horror movie, The Amityville Horror. The case raised questions about the family's dynamics and the psychological state of Ronald, leading to ongoing discussions about the events surrounding that fateful night.