John Perceval, Earl of Egmont
(1711-1770), 2 nd
Earl of Egmont, was a cabinet minister and close adviser to George III and the Prince of Wales. He has one other claim to fame. In 1762, the same year that he became First Lord of the Admiralty, he fathered his seventh son, Spencer Perceval
, who went on to become the only British Prime Minister ever to be assassinated.