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Allison Louise DeFeo

Death by Force
Case Description
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On the night of November 13, 1974, the quiet town of Amityville, New York, was shaken by a horrific crime that would later become infamous. Allison Louise DeFeo, aged 13, was one of six family members brutally murdered in their home at 112 Ocean Avenue. The perpetrator was her older brother, Ronald "Butch" DeFeo Jr., who used a .35-caliber Marlin rifle to kill his parents, Ronald Sr. and Louise, along with his siblings: Dawn, 18; Allison, 13; Marc, 12; and John Matthew, 7. The family members wer ...Read More
Links to Additional Sources (3)
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  • Allison DeFeo | Headhunter's Horror House Wiki - Fandom
  • Allison Louise DeFeo (1961-1974) - Find a Grave Memorial
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    Victim Details

    Allison Louise DeFeo

    Female

    White / Caucasian

    Amityville

    NY

    1974-11-13

    13

    Allison

    Louise DeFeo

    11/21/2025

    Forum Posts (3)
    I’ve been thinking a lot about Allison DeFeo and how young she was—just 13 years old. It’s tru... ...Read More
    09/07/2024
    Hey everyone,
    I was thinking about the strange lack of noise during the night of the DeFeo murder... ...Read More
    02/23/2023
    Every time I think about the DeFeo case, I keep returning to poor Allison, just 13 years old, caught... ...Read More
    01/15/2023
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    Louise Marie Brigante DeFeo, aged 43, was tragically murdered on November 13, 1974, in Amityville, N ...Read More