House of York Warwick himself changed sides, and supported Margaret of Anjou and the king's jealous brother George, Duke of Clarence, in briefly restoring Henry in 1470-71. However, Edward regained his throne, and the House of Lancaster was wiped out with the death of Henry VI himself, in the Tower of London in 1471. In 1478, the continued trouble caused by Clarence led to his execution in the Tower of London; popularly he is thought to have been drowned in a butt of malmsey wine. On Edward's death in 1483, the crown passed to his twelve-year-old son Edward. Edward IV's younger brother Richard,
Prince Richard, Duke of Gloucester on 5 and 6 November 2008 at the Graduation Award Ceremonies. The Duke is also patron of the Severn Valley Railway and the Pestalozzi International Village Trust. He is also a patron of the British Homeopathic Association, a charity dedicated to the study, research and promotion of homeopathy. He shares a name with another Duke of Gloucester, Richard III, and is the patron of the Richard III Society. He is also a member of the International Advisory Board of the Royal United Services Institute. Since 1972, the Duke has been a corporate member of the Royal Institute of British Architects.