Thomas Jefferson Coolidge [1831-1920] was the son of Joseph Coolidge, Jr. and Eleanora Wayles Randolph, and the great-grandson of Thomas Jefferson. Born in Boston, he attended boarding schools in Europe and returned to the United States to attend Harvard University, from which he graduated in 1850. His career included management in several New England cotton industries, directorships of Merchants National Bank of Boston and the New England Trust Company, and management of various railroads. In 1889 he was appointed a member of the Pan-American Congress, and in 1892 became U.S. minister to France.
Coolidge, Emma Downing. Descendants of John and Mary Coolidge of Watertown, Massachusetts. Boston, 1963:351