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Case Description
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On January 5, 1985, a tragic event unfolded at the McNamara family ranch in Santa Barbara, California. Diane Trenner, a 4-year-old girl, was among the victims of a horrific shooting spree carried out by her uncle, Barry McNamara. The incident, which has been described as the worst massacre in Santa Barbara County's history, resulted in the deaths of four family members: Diane Trenner, her mother Diane L. Trenner, her grandparents Elger and Florence McNamara.
The massacre began shortly bef ...Read More
The massacre began shortly bef ...Read More
Links to Additional Sources (2)
See any mistakes?Victim Details
Diane Trenner
Female
Santa-barbara
CA
1985-01-05
4
Diane
Trenner
11/14/2025
Forum Posts (3)
I was reading about the tragic McNamara family massacre recently, and I can't stop thinking about th... ...Read More
09/09/2024
09/09/2024
Has anyone else looked into the background of Barry McNamara’s mental health history? It's really ... ...Read More
07/06/2024
07/06/2024
Has anyone else looked into the role of mental health support (or lack thereof) leading up to these ... ...Read More
03/26/2023
03/26/2023
