Augustus Henry FitzRoy, 3rd Duke of Grafton, styled Earl of Euston between 1747 and 1757, was a British Whig statesman of the Georgian era. He is one of a handful of dukes who have served as prime minister. Born: September 28, 1735 Died: March 14, 1811 In office: October 14, 1768 – January 28, 1770 Wiki link