The four personages represent aspects of George III's reign in the Annus Mirabilis of 1759. 1st Earl Camden was George III's Lord Chancelor and a champion of civil liberties. Early Conway represents the Union as an Irish peer. Lord Hawke became First Lord of the Admiralty having staved off the French invasion in Queberion Bay. Pitt the Elder was, of course, George III's Prime Minister from 1766-8.