Isaac Jefferson, also likely known as Isaac Granger (1775 - ca. 1850) was a valued, enslaved artisan of U.S. President Thomas Jefferson; he crafted and repaired products as a tinsmith, blacksmith, and nailer at Monticello.
Although Thomas Jefferson gave Isaac and his family to his daughter Maria and her husband John Wayles Eppes in 1797 as a wedding gift, Isaac Jefferson/Granger appeared to gain his freedom by 1822, according to his memoir. In the 1840 census he was recorded as Isaac Granger, a free man working in Petersburg, Virginia. The Rev. Charles Campbell interviewed him there and published his memoir under the name of Isaac Jefferson in 1847. Granger/Jefferson describes Thomas Jefferson as a master, and his part in the lives of his slaves.
Born into slavery in 1775, Isaac was the third son of Ursula and Great George. His father rose in the hierarchy from foreman of labor to become overseer of Monticello in 1797, the only slave to reach that position under Thomas Jefferson. He was paid an annual wage of £20. In 1773 Jefferson had purchased Isaac's mother Ursula, and she became a highly trusted domestic servant.