Henry joined the revolt of Edward's wife Isabella of France and her lover Mortimer in 1326, pursuing and capturing Edward at Neath in South Wales. Following Edward's deposition at the Parliament of Kenilworth in 1326 and reputed murder at Berkeley Castle, Thomas's conviction was posthumously reversed and Henry regained possession of the Earldoms of Lancaster, Derby, Salisbury and Lincoln that had been forfeit for Thomas's treason. His restored prestige led to him knighting the young King Edward III of England before his coronation. Mortimer lost support over the Treaty of Edinburgh–Northampton that formalised Scotland's independence, and his developing power in the Welsh Marches provoked jealousy from the barons. When Mortimer called a parliament to make his new powers and estates permanent with the title of Earl of March in 1328, Henry led the opposition and held a counter-meeting. In response, Mortimer ravaged the lands of Lancaster and checked the revolt. Edward III was able to assume control in 1330 but Henry's further influence was restricted by poor health and blindness for the last fifteen years of his life.