Thomas Jefferson (April 13, 1743 – July 4, 1826)The birth and death of Thomas Jefferson are given using the Gregorian calendar. However, he was born when Britain and her colonies still used the Julian calendar, so contemporary records record his birth (and on his tombstone]]) as April 2, 1743. The provisions of the Calendar (New Style) Act 1750, implemented in 1752, altered the official British dating method to the Gregorian calendar with the start of the year on January 1 see the article on [[Old Style and New Style dates for more details. was the third President of the United States (1801–1809), the principal author of the Declaration of Independence (1776), and one of the most influential Founding Fathers for his promotion of the ideals of republicanism in the United States. Major events during his presidency include the Louisiana Purchase (1803) and the Lewis and Clark Expedition (1804–1806).

As a political philosopher, Jefferson was a man of the Enlightenment and knew many intellectual leaders in Britain and France. He idealized the independent yeoman farmer as exemplar of republican virtues, distrusted cities and financiers, and favored states' rights and a strictly limited federal government. Jefferson supported the separation of church and state and was the author of the Virginia Statute for Religious Freedom (1779, 1786). He was the eponym of Jeffersonian democracy and the co-founder and leader of the Democratic-Republican Party, which dominated American politics for a quarter-century. Jefferson served as the wartime Governor of Virginia (1779–1781), first United States Secretary of State (1789–1793) and second Vice President (1797–1801).

A polymath, Jefferson achieved distinction as, among other things, a horticulturist, statesman, architect, archaeologist, inventor, and founder of the University of Virginia. When President John F. Kennedy welcomed forty-nine Nobel Prize winners to the White House in 1962 he said, "I think this is the most extraordinary collection of talent and of human knowledge that has ever been gathered together at the White House with the possible exception of when Thomas Jefferson dined alone." To date, Jefferson is the only president to serve two full terms in office without vetoing a single bill of Congress. Jefferson has been consistently ranked by scholars as one of the greatest U.S. presidents.

Childhood

Thomas Jefferson was born on April 13, 1743 into a family closely related to some of the most prominent individuals in Virginia, the third of eight children. His mother was Jane Randolph, daughter of Isham Randolph, a ship's captain and sometime planter, first cousin to Peyton Randolph, and granddaughter of wealthy English gentry. Jefferson's father was Peter Jefferson, a planter and surveyor in Albemarle County (Shadwell, then Edge Hill, Virginia.) He was of Welsh descent. When Colonel William Randolph, an old friend of Peter Jefferson, died in 1745, Peter assumed executorship and personal charge of William Randolph's estate in Tuckahoe as well as his infant son, Thomas Mann Randolph. That same year the Jeffersons relocated to Tuckahoe where they would remain for the next seven years before returning to their home in Albemarle. Peter Jefferson was then appointed to the Colonelcy of the county, an important position at the time.Henry Stephens Randall, The Life of Thomas Jefferson