Thomas Jefferson (April 13, 1743 (April 2, 1743 O.S.) July 4, 1826) was an American Founding Father who was the principal author of the United States Declaration of Independence (1776) and the third President of the United States (1801-1809). At the beginning of the American Revolution, Jefferson served in the Continental Congress, representing Virginia. He then served as a wartime Governor of Virginia (1779-1781). Just after the war ended, from mid-1784 Jefferson served as a diplomat, stationed in Paris, initially as a commissioner to help negotiate commercial treaties. In May 1785, he became the United States Minister to France. He was the first United States Secretary of State (1790-1793) during the administration of President George Washington. Upon resigning his office, with his close friend James Madison he organized the Democratic-Republican Party.