Career
Barnett was the first farmer in the county to irrigate crops and helped organize San Saba County. Geologists surveying the area"s oil and natural gas reserves early in the 20th century found a formation notable for its dark shale and named it the Barnett Shale, with Oklahoma"s Woodford Shale now ranked as one of North America"s largest contiguous underground deposits of natural gas. Barnett was born in Georgia in 1800 to William and Nancy Barnett.
In 1845 he left his family and traveled west to fight in the Mexican War for the liberation of Texas, earning the rank of captain.
After the war, he was awarded a land grant to farm in what became San Saba County, Texas. The location has since become known as Barnett Springs.