Thomas Jefferson The third president of the United States, a diplomat, statesman, architect, scientist, and philosopher, Thomas Jefferson is one of the most eminent figures in American history. No leader in the period of the American Enlightenment was as articulate, wise, or conscious of the implications and consequences of a free society as Thomas Jefferson. Thomas Jefferson was born on April 13, 1743, at Shadwell, a tobacco plantation in Virginia. His father, Peter Jefferson, was a self-made success, and although uneducated he was a very intelligent man. His mother, Jane Randolph was a member of one of the most distinguis