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Margo E. Compton

Death by Force
Case Description
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On August 7, 1977, a tragic and brutal crime shook the small community of Gaston, Oregon, with the execution-style murders of Margo E. Compton, 24, her 6-year-old twin daughters, Sylvia and Sandra, and her boyfriend's 19-year-old son, Gary Seslar. This horrific event was deeply intertwined with the activities of the Hells Angels motorcycle club, particularly the Vallejo chapter.

Margo Compton had previously testified against several Hells Angels members in a prostitution trial in San Fran ...Read More
Links to Additional Sources (7)
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  • Hells Angels MC criminal allegations and incidents in California - Wikipedia
  • Oregon Jury Convicts Man in 4 Killings Linked to Hell's Angels (Published 1994)
    •     ...View 5 additional sources
    Victim Details

    Margo E. Compton

    Female

    White / Caucasian

    Gaston

    OR

    1977-08-07

    24

    Margo

    E. Compton

    12/02/2025

    Forum Posts (3)
    Has anyone else looked into the timeline of threats that Margo Compton received before her tragic mu... ...Read More
    12/21/2024
    Hey everyone,
    I've been digging into the Gaston murders and wanted to share some thoughts on the ... ...Read More
    10/30/2024
    Hi everyone,
    I've been researching Margo Compton's case, and I can't stop thinking about the th... ...Read More
    02/03/2023
    Other Cases from Gaston, Oregon

    Sandra Compton

    Death: Aug 07, 1977
    On August 7, 1977, a tragic and brutal crime occurred in Gaston, Oregon, resulting in the execution- n ...Read More

    Sylvia May Compton

    Death: Aug 07, 1977
    On a tragic day in August of 1977, the quiet community of Gaston, Oregon, was shattered by a brutal l ...Read More