Montagu, William , first earl of Salisbury (13011344)
William was a major figure at court, at the time this licence was granted he was just about to serve again as an ambassador. A close friend of the king he was a prime figure in the removal of Mortimer as regent in 1330.
As a member of the royal household Montagu served abroad with Edward II in 1320 and 1325, and he received a knighthood in 1326. Summoned to provide military service on the first Scottish campaign of Edward III's reign in 1327, he was elevated to the rank of knight-banneret of the household by June 1328 and was granted the manor of Wark on the River Tweed in January 1329, in part payment for his agreement to serve the king in peace and war for life with a personal retinue of twenty men-at-arms. In October 1329 he was made keeper of the king's stannary and the water of Dartmouth.
Montagu clearly established a close friendship with the young Edward III. He accompanied the king on a journey to Amiens in MayJune 1329 and was sent to France in June of the same year to negotiate a marriage alliance with Philip VI. More particularly, in September 1329 he was sent to discuss certain secret business with Pope John XXII at Avignon, as a result of which Edward III wrote to the pope indicating that only those written instruments containing the words pater sancte, written in his own hand, should be considered to express the king's personal wishes, and specifying that only Montagu and Richard Bury, the royal secretary, were apprised of this business. The implication was that the king's mother, Queen Isabella, and her lover, Roger Mortimer, earl of March, who controlled the government, were preventing the king from taking charge of his own regime. (Ormrod)
Biographical source include;