Inspired by the Revolution and evangelical preachers, numerous slaveholders in the Chesapeake region manumitted some or all of their slaves, during their lifetimes or by will. From 1,800 persons in 1782, the total population of free blacks in Virginia increased to 12,766 (4.3 percent of blacks) in 1790, and to 30,570 in 1810; the percentage change was from free blacks' comprising less than one percent of the total black population in Virginia, to 7.2 percent by 1810, even as the overall population increased. One planter, Robert Carter III freed more than 450 slaves in his lifetime, more than any other planter. George Washington freed all of his slaves at his death.