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,
Wartislaw III, Duke of Pomerania and therefore integrated what was left of Pomerania-Demmin after the territorial losses of 1236 into his Stettin-based duchy. Wartislaw III's and his mother Ingardis' burial site is Eldena Abbey near Greifswald. Wartislaw III, Duke of Pomerania Wartislaw III (c. 1210 – 17 May 1264) was a Griffin duke of Pomerania-Demmin. Son of Casimir II of Pomerania-Demmin and Ingardis of Denmark, he was married to a Sophia of an unknown house. As he did not have any children, Pomerania-Demmin ceased to exist with his death. Ingardis ruled Pomerania-Demmin in place of young Wartislaw from Casimir's death 1219 until 1226. At that