 "George de Dounbar, son and heir of the Earl of the Marches of Scotland" had a further Safe-conduct, with numerous other nobles, to travel to England between 1416 and 1419.On 19 August 1423 "George, Earl of March" and his brother Sir Patrick de Dunbar of Beil were named as part of the embassy sent to negotiate the liberation of King James I of Scotland who had long been a captive in England.On 28 March 1424, the Earl of March was one of the Conservators of the seven-year truce with England, and met James I and his consort at Durham upon their return to Scotland.