Thomas Jefferson was born on April 13, 1743 (April 2, 1743, Old Style, Julian calendar), at the family home in Shadwell in the Colony of Virginia, the third of ten children. He was of English, and possibly Welsh, descent and was born a British subject. His father Peter Jefferson was a planter and surveyor who died when Jefferson was fourteen; his mother was Jane Randolph. Peter Jefferson moved his family to Tuckahoe Plantation in 1745 upon the death of William Randolph, the plantation's owner and Jefferson's friend, who in his will had named him guardian of his children. The Jeffersons returned to Shadwell in 1752, where Peter died in 1757; his estate was divided between his sons Thomas and Randolph. Thomas inherited approximately 5,000 acres (2,000 ha; 7.8 sq mi) of land, including Monticello. He assumed full authority over his property at age 21.