The death of Henry Wardlaw left the bishopric of St Andrews, the most prestigious Scottish see, vacant, and it was James who was postulated to the vacancy. This occurred while James was at the court of PopeEugenius IV, busy at Florence on the historical Council of Florence. However, before royal letters arrived bearing news of James' election, the Pope had already provided his translation to the see. Formal translation took place on 8 June 1440. He was an active and successful bishop. He celebrated his first mass in his St Andrews Cathedral on 30 September 1442, and at once resumed his efforts in reform. During the minority of James III, Kennedy took a leading part in political affairs, and was frequently able to reconcile contending noblemen. He was made Chancellor of Scotland in May 1444 after the expulsion of Sir William Crichton, but resigned the office a few weeks later on finding that his duties interfered with his ecclesiastical work. When the schism in the papacy assumed a very critical character, Kennedy undertook a journey to Rome with the intention of promoting a reconciliation. He obtained a safe-conduct through England from Henry VI, dated 28 May 1446. His efforts were unsuccessful, and he probably soon returned home. Another safe-conduct for himself and others "coming to England", dated 20 May 1455, probably marks the termination of another visit to the continent. In 1450 he founded St Salvator's College in St. Andrews, endowing it liberally with the teinds of four parishes that had formerly belonged to the bishopric. His foundation was confirmed by Pope Nicholas V by a bull dated 27 February 1451, and a few years later some alterations made in the foundation-charter received the approval of Pope Pius II by bulls dated 13 September and 21 October 1458. Shortly afterwards Kennedy established the Grey Friars monastery in St Andrews. He also built a large vessel called the "Saint Salvator", which was frequently used by royal personages, and regarded as a marvel, until it was wrecked near Bamburgh while on a voyage to Flanders in 1472. After the death of James II in 1460, Kennedy was chosen one of the seven regents during the minority of James III, and to him was committed not only the charge of the kingdom, but the pacification of the nobles associated with him in the government.
Death and legacy
He died on 24 May 1465. The date is usually given as 1466, but a charter belonging to the abbey of Arbroath, dated 13 July 1465, speaks of him as lately deceased, and of his see as vacant. Kennedy was buried in a magnificent tomb which he had caused to be built in St Salvator's Chapel. He had, it is believed, procured the design and materials from Italy. The ruins are still visible. It is stated by Bishop Lesley that Kennedy's college, ship, and monument each cost an exceptional amount of money. Kennedy was highly esteemed during his lifetime, both as an ecclesiastic and a politician. Even George Buchanan says that he excelled all his predecessors and successors in the see, and praises his zeal for reform. Kennedy is said to have left behind him several treatises. The only titles preserved are Historia sui Temporis and Monita Politica.
In fiction
Bishop Kennedy is a significant character in Black Douglas by Nigel Tranter, where he is depicted rather unfavourably.