According to theses articles Gary Earl Bright was sent to a juvenile detention center in Missouri for the murders of his family. About a year later he was released to his father's care. His farther married Alden Kathleen Webb sometime between 1957 and 1960. In 1960, Gary attacked his step-mother with a wrench and was then sentenced to 15 years in prison for the attack.
Theses are articles from 1957. Most of these repeat each other but the two that added details I separated out and posted them first.
Brownsville Herald Nov 27, 1957
Daily Register Nov 26, 1957
Three months after the murders Gary Earl Bright was found sane and then placed in a juvenile detention center in St. Louis, MO.
Joplin Globe Feb 4, 1958
Theses are the articles from 1960 when he attacked his step-mother.
The Bee July 23, 1960
Wisconsin Rapids Daily Tribune Oct 12, 1960
The Gettysburg Times Oct 13, 1960