 In 1396, it is known that he travelled to Avignon once again; a roll of petitions presented by Dúghall on behalf of 20 Scottish people and 3 continental Europeans was granted by Pope Benedict XIII on 1 August 1396.The last ever notice of Dúghall occurs in a charter of the lord of Byres, wherein Dúghall appears along with the Duke of Albany and Walter Trail, Bishop of St Andrews; the charter can be dated between 1398 (creation of the Duchy of Albany) and 1401 (the death of Walter Trail).It is not known for certain that he is death until 10 September 1403, when his successor Fionnlagh MacCailein was provided as the new Bishop of Dunblane.