Thomas Monroe Hardeman, soldier and Texas Ranger, the oldest son of Thomas Jones and Mary Ophelia (Polk) Hardeman, was born in December 1814 at Bolivar, Hardeman County, Tennessee. He graduated from the University of Nashville and late in 1835 accompanied his father and other members of the Hardeman family to Texas. On October 2, within several days of his arrival, he joined the Texans' armed resistance against Mexican forces at Gonzales. In March 1836 he and his brother William accompanied a relief column to the Alamo but arrived after the garrison had fallen to Gen. Antonio López de Santa Anna's forces. Hardeman joined Sam Houston's army and fought at the decisive battle of San Jacinto, April 21, 1836. After the establishment of the Republic of Texas he received land grants in Matagorda and Gonzales counties in exchange for his military service. On August 12, 1840, he and his brother Owen Bailey Hardeman fought in the one-sided battle of Plum Creek against Chief Buffalo Hump's Comanche braves. Two years later Monroe took part in the campaign against Rafael Vásquez, and he reportedly joined the expedition of Alexander Somervell against Mexico in November 1842. After his service with the Texas Rangers, Hardeman settled down to the life of a planter. He married Susan Burleson, great-niece of Gen. Edward Burleson, on April 16, 1843. They resided at Prairie Lea in Caldwell County and reared four children. Hardeman was a Mason and an Episcopalian. He was also devoted to the Confederate cause in the Civil War. He enlisted in Gen. John B. Hood's brigade and died at Knoxville, Tennessee, en route to Virginia, on September 14, 1862. He was buried in the family cemetery in Hardeman County, Tennessee.