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,
George Plantagenet, 1st Duke of Clarence ultimately failed and Warwick was killed in battle of Barnet April 1471. The re-instated King Edward IV restored his brother Clarence to royal favour by making him Great Chamberlain of England. As his father-in-law had died, Clarence became "jure uxoris" Earl of Warwick, but did not inherit the entire Warwick estate as his younger brother, Richard, Duke of Gloucester, had married () Anne Neville, who had been widowed in 1471. Edward intervened and eventually divided the estates between his brothers. Clarence was created first Earl of Warwick on 25 March 1472. In 1475 Clarence's wife Isabel gave birth to a