Thomas Eagleton was born on 4 September 1929 in St. Louis, Missouri, USA. He was married to Barbara Ann Smith. He died on 4 March 2007 in Richmond Heights, Missouri, USA.
Democrat U.S. senator from Missouri, 28 December 1968-3 January 1987. Incumbent senator Edward V. Long lost the 1968 primary election to Eagleton; when Eagleton was elected to the seat in November, Long resigned 27 December 1968 and Eagleton was appointed to fill the unexpired term through 3 January 1969.