Earl of Salisbury later by Richard Neville "the Kingmaker", upon whose death the title went into abeyance because multiple individuals were entitled to inherit it. Then, in 1472, it was granted to George, Duke of Clarence, who was married to Warwick's eldest daughter. When the Duke of Clarence was executed in 1478 for treason (supposedly by being drowned in a vat of Malmsey wine), the title was forfeit. It was then granted to Edward of Middleham (who was his nephew via the Duke's brother Richard), who died in 1484 at the age of 11. It was restored to two of George of Clarence's
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