David Hartley the Younger (1731-1813), English diplomat, Member of Parliament, and son of the philosopher David Hartley (1705-1757). The scene shows Hartley with the scroll (left) for the Treaty of Paris (signed 3 September 1783) that ended the American Revolutionary War. Hartley was Minister Plenipotentiary, appointed by King George III to treat with the rebel colonies in North America that had declared independence in 1776 as the United States of America. Hartley was MP for Kingston-upon-Hull. Painted by George Romney, engraved by James Walker, published in The pictorial field-book of the Revolution (1859).