Sylvia May Compton murdered or death by force in Gaston, Oregon.

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Case Description

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On a tragic day in August of 1977, the quiet community of Gaston, Oregon, was shattered by a brutal act of violence that claimed the lives of four people, including a young White female child named Sylvia May Compton. At only six years of age, Sylvia, along with her twin sister Sandra, her 24-year-old mother Margo Compton, and her mother's 19-year-old boyfriend, Gary Seslar, were found murdered in their home on August 7th. Each had been shot in the head in what was described as an execution-styl ...Read More

Links to Additional Sources (2)

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Gunman Guilty Of Four Murders | The Seattle Times

Sylvia May Compton (1970-1977) - Memorials - Find a Grave

Victim Details

name

Sylvia May Compton

gender

Female

race

White / Caucasian

city

Gaston

state

OR

Date of Death

1977-08-07

Age at Death

6

First Name

Sylvia

Last Name

May Compton

Last Updated

11/25/2025

Forum Posts (2)

Does anyone here have any info or insight on the investigation techniques used in the Margo Compton ... ...Read More
08/20/2023

I was reading about the tragic murders of Margo Compton, her daughters, Sylvia and Sandra, and Gary ... ...Read More
03/17/2023

Other Cases from Gaston, Oregon

Margo E. Compton

Death: Aug 07, 1977
On August 7, 1977, a tragic and brutal crime shook the small community of Gaston, Oregon, with the e ...Read More

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