Pope Urban II (Latin: Urbanus II; c. 1035 – 29 July 1099), otherwise known as Odo of Châtillon or Otho de Lagery, was the head of the Catholic Church and ruler of the Papal States from 12 March 1088 to his death. He is best known for convening the Council of Clermont which served as the catalyst for the Crusades. Pope Urban was a native of France, and was a descendant of a noble family from the French commune of Châtillon-sur-Marne. Reims was the nearby cathedral school where he began his studies in 1050. He was beatified by Pope Leo XIII on 14 July 1881.