Third U.S. President: Thomas Jefferson, born April 13, 1743.

Multifaceted: Author, lawyer, philosopher, inventor, architect, and statesman.

Instrumental in U.S. Declaration of Independence, July 4, 1776.

President from 1801 to 1809, pivotal in American history.

Father of the University of Virginia, founded in 1819.

Married Martha Wayles, had six children.