How did Jefferson acquire his slaves?
Jefferson acquired most of the over six hundred slaves he owned during his life through the natural increase of enslaved families. He acquired approximately 175 slaves through inheritance: about 40 from the estate of his father, Peter Jefferson, in 1764, and 135 from his father-in-law, John Wayles, in 1774. Jefferson purchased fewer than twenty slaves in his lifetime, in some cases to unite spouses and in others to satisfy labor needs at Monticello.