About Nathan Clifford
Nathan Clifford (August 18, 1803 – July 25, 1881) was an American statesman, diplomat and jurist. Clifford is one of the few people who have held a constitutional office in each of the three branches of the U.S. federal government. He represented Maine in the U.S. House of Representatives from 1839 to 1843, then served in the administration of President James K. Polk as the U.S. Attorney General from 1846 to 1848 and as the U.S. Ambassador to Mexico from 1848 to 1849. In the latter office, he signed the Treaty of Guadeloupe Hidalgo. In 1858, President James Buchanan appointed Clifford to be an associate justice of the U.S. Supreme Court. Clifford served on the Supreme Court until his death in 1881. Anti-slavery representatives in the United States Senate fiercely opposed Clifford due to his pro-slavery record. It was through Clifford that the Treaty of Guadalupe Hidalgo was arranged with Mexico, by which California became a part of the United States.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.