John Greenwood Sr.: A Pioneer of Early American Portraiture Born: December 7, 1727, Boston, Massachusetts Died: September 16, 1792, Margate, Kent, England John Greenwood Sr. (1727-1792) stands as a significant figure in the development of American art, recognized for his contributions as an early portrait painter, engraver, and auctioneer. Born into a family with ties to Harvard University – his father was a merchant and his uncle a professor – Greenwood’s early life was marked by financial hardship following his father's death in 1742. This led to an apprenticeship with Thomas Johnst…