of Peter Lombard, and defended and promoted the works of Thomas Aquinas. He was appalled by the Defensor Pacis of Marsilius of Padua, and wrote a treatise in 1325 condemning its principles and defending Pope John XXII. He was granted the priory of St. Baudil, a dependency of the Abbey of La Chaise-Dieu, on 24 April 1324, at the personal order of Pope John XXII; and then, on 23 June 1326, he was named Abbot of Fécamp, a royal abbey and one of the most important monasteries in France. He held the position until 1329. Pierre Roger was called to Avignon through the influence of his friend and protector, Cardinal Pierre de Mortemart (who was named a cardinal on 18 December 1327), both of whom were close to King Charles IV. Unfortunately, King Charles IV died on 1 February 1328, the last Capetian king of France in the direct line. As Abbot of Fécamp, and therefore a feudal subject of Edward III, Pierre was assigned the task in 1328 of summoning Edward III of England to pay homage to Philip VI of France for the duchy of Aquitaine. He received no reply, however, from King Edward, and was forced to return to France, his mission unaccomplished. Episcopacy On 3 December 1328 Peter Roger was named Bishop of Arras, in which capacity he became a royal councilor of King Philip VI. He held the diocese of Arras only until 24 November 1329, less than a year, when he was promoted to the Archdiocese of Sens. He held the Archbishopric of Sens for one year and one month, until his promotion to the See of Rouen on 14 December 1330. In 1329, while Pierre Roger was still Archbishop-elect of Sens, a major assembly of the French Clergy was held at Vincennes in the presence of King Philip VI (1328–1350), to deal with issues involving the judicial powers of ecclesiastical authorities. Many propositions were put forward against ecclesiastical jurisdiction, which were ably argued by Pierre de Cugnières (Petrus de Cugneriis). Pierre Roger made the rejoinders on 22 December 1329, on behalf of the ecclesiastical authority. When Pierre Roger became Archbishop of Rouen in December 1330, he was expected to swear allegiance to his feudal overlord. King Philip VI had recently given his son Jean the Dukedom of Normandy as an apanage, and Pierre was worried about what might happen if someone other than