Thomas Jefferson (1743–1826) Early Years Fry-Jefferson Map Jefferson was born on April 2, 1743 (after the change in 1752 from the Julian, or Old Style, Calendar, the date was adjusted to April 13, which became common usage). He was the son of and Jane Randolph Jefferson and was born at Shadwell, on the in a part of that became Albemarle County in 1744. Read more about: Thomas Jefferson (1743–1826)