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,
Thomas of Lancaster, 1st Duke of Clarence Bermondsey, Surrey. Thomas of Lancaster, 1st Duke of Clarence Thomas of Lancaster, 1st Duke of Clarence (autumn 1387 – 22 March 1421) was a medieval English prince and soldier, the second son of King Henry IV of England and brother of Henry V. He acted as councillor and aide to both. After the death of his father he participated in the military campaigns of his brother in France during the Hundred Years' War. Heir to the throne in the event of his brother's death, he was left in charge of English forces in France when Henry returned temporarily to England