Dr. Mud
"In 1865, Joseph Pivoto freed his slaves, one of whom was a very tall black man named Bazile," according to the late historian W.T. Block's book "Sour Lake, Texas - From Mud Baths to Millionaires."
"He had called himself an Indian and gained an early reputation as a 'medicine man' who treated other slaves with homeopathic herbs, a practice which may have had its origin in the early Acadian French "treteur" culture of frontier Louisiana rather than some African beginning."
After the Civil War, Bazile Brown, better known as Dr. Mud, gained considerable notoriety for his treatment of skin conditions by bathing folks in the four-acre lake that contained escaping gas and splotches of petroleum that caused the sour taste. (Hence the name, Sour Lake)