 In 1427 the earls of Dunbar and Douglas obtained, in London, a truce from King Henry VI of England for two years, which Sir Robert Umfraville, governor of Berwick-upon-Tweed had refused.George was next employed in negotiating more temporary truces with England in June 1429 and the following January; and officiated as sponsor for King James II of Scotland at Holyroodhouse in October 1430.In 1434 Dunbar and his son Patrick were twice in England and the usual jealousies of the Crown and opponents in Scotland were aroused and the earl was arrested upon his return and confined in Edinburgh Castle, while the Earl of Angus, Chancellor Crichton, and Sir Adam Hepburn of Hailes, were dispatched with Letters to the Keeper of Dunbar Castle who immediately surrendered it to the King's authority, Hepburn being left as Constable of the important fortress.