Anti-Papal agitator, born in London, son of the Duke of Gordon; he adopted the navy as a profession, and rose to be lieutenant; entered Parliament, and soon made himself conspicuous by his indiscriminate attacks on both Whigs and Tories; gave a passionate support to the London Protestant Association formed for the purpose of bringing about the repeal of the Catholic Emancipation Bill of 1778; in 1780, as President of the Association, took the leading part in the famous No Popery riots in London; was tried but acquitted, mainly through the eloquent defence of Erskine; subsequently he was excommunicated for contempt of court, and eventually, after endeavouring to escape prosecution for two treasonable pamphlets, was apprehended, and died in Newgate (1751-1793).