The Council of Clermont was a mixed synod of ecclesiastics and laymen of the Catholic Church, called by Pope Urban II and held from 17 to 27 November 1095 at Clermont, Auvergne, at the time part of the Duchy of Aquitaine. Pope Urban's speech on 27 November included the call to arms that would result in the First Crusade, and eventually the capture of Jerusalem and the establishment of the Kingdom of Jerusalem. In this, Urban reacted to the request by Byzantine emperor Alexius I Comnenus who had sent envoys to the Council of Piacenza requesting military assistance against the Seljuk Turks. Several accounts of the speech survive; of these, the one by Fulcher of Chartres, who was present at the council, is generally accepted as the most reliable. Urban also discussed Cluniac reforms of the Church, and also extended the excommunication of Philip I of France for his adulterous remarriage to Bertrade of Montfort. The council also declared a renewal of the Truce of God, an attempt on the part of the church to reduce feuding among Frankish nobles. Participants The council was attended by about 300 clerics. No official list of the participants or of the signatories to the decrees of the Council survives. A partial list of some of the attendees can nonetheless be constructed. Joannes, Cardinal Bishop of Porto Dagobert, Archbishop of Pisa Bruno, Bishop of Segni Galterius, Cardinal Bishop of Albano Rangerius, O.S.B., Archbishop of Reggio Calabria Richard, Cardinal Priest and Abbot of S. Victor in Marseille Teuzo, Cardinal Priest of SS. Joannis et Pauli Albertus, O.S.B., Cardinal Priest of Santa Sabina Joannes Gattellus, the Pope's Chancellor Gregory Papiensis, deacon Hugo of Verdun, deacon Hugues de Die, Archbishop of Lyon and Papal Legate Amatus, Archbishop of Bordeaux and Papal Legate Rainaldus, Archbishop of Reims Richerius, Archbishop of Sens Rollandus, Bishop of Dol Dalmatius, Archbishop of Narbonne Bernard of Sédirac, Archbishop of Toledo and Legate in Spain Hoellus (Hoël,) Bishop of Le Mans Geoffrey of Vendôme, Cardinal Priest of the titular church of Santa Prisca on the Aventine Benedict, Bishop of Nantes Petrus, Bishop of Poitiers Ivo, Bishop of Chartres Joannes, Bishop of Orléans Roger, Bishop of Beauvais Radulfus (Raoul), Archbishop of Tours Hilgot, former Bishop of Soissons, monk of Marmoutiers Speech There are six main sources of information about this portion of the council: A letter that was written by Urban himself in December 1095