1847. His body was transported to Kentucky and interred in Frankfort Cemetery in Frankfort. His slave John also returned to Kentucky, where after emancipation, he took the full name John Henry Clay. In 1876, he and his wife Sallie had a son, Herman Heaton Clay. In 1912, Herman and his wife Edith had a son of their own and named him Cassius Marcellus Clay, after the abolitionist cousin of Henry Clay. In 1942, Cassius and his wife Odessa Grady Clay had a son they named Cassius Marcellus Clay, Jr., who would later change his name to Muhammad Ali and become three-time heavyweight champion of the world and one of the most famous humans of the 20th century. Legacy and honors Clay County, Iowa is named in his honor. References External links Service Profile 1811 births 1847 deaths Members of the Kentucky House of Representatives American military personnel killed in the Mexican–American War Kentucky lawyers American people of English descent United States Military Academy alumni Burials at Frankfort Cemetery Henry Clay family American lawyers admitted to the practice of law by reading law 19th-century American politicians