The jury at a court in Eldorado, West Texas, deliberated for under two hours Tuesday before convicting Keate for his "spiritual marriage" to a 15-year-old girl who gave birth at age 16.
The prosecution's case largely relied on records seized from the polygamists' Yearning For Zion Ranch in April 2008, including some that indicated Keate had six wives aged 17 to 49 in 2007.
