Formed from Bell County; created February 4, 1854--Organized March 4, 1854. Named in Honor of James Coryell, born in Tennesse in 1796; a member of the Bowie Expedition to the old San Saba Silver Mines in 1831; a Texas Ranger; killed by Indians near Fort Milam May 27, 1837. County seat Fort Gates 1854; Gatesville since.