One of the eight delegates born outside of the thirteen colonies, Davie was born in Egremont, Cumberlandshire, England, on June 20, 1756. In 1763 Archibald Davie brought his son William to Waxhaw, SC, where the boy's maternal uncle, William Richardson, a Presbyterian clergyman, adopted him. Davie attended Queen's Museum College in Charlotte, North Carolina, and graduated from the College of New Jersey (later Princeton) in 1776.