Aicard Pope Urban II, the greatest of the Gregorian reformers after Gregory, travelled through Languedoc and Provence, visiting Montpellier, Nîmes, Saint-Gilles, Tarascon, Avignon, Aix, Cavaillon, and other cities, preaching the First Crusade at the Council of Clermont in 1095, he had to avoid Arles, where the deposed bishop was still in power. Between 1098 and 1099, however, Aicard probably relinquished his see to follow the Crusade. Ghibbelin appeared for the first time in Urban's papal bull releasing the citizens of Arles from the penalties incurred in 1080. Aicard was in the Holy Land from 1103 to 1105, where he joined Raymond
Pope Pius II was not an eminent scholar. His Latin was fluent, but he knew little Greek. Still, his writings have many good qualities. Pope Pius II inaugurated an unusual urban project, perhaps the first city planning exercise in modern Europe. He refurbished his home town of Corsignano (province of Siena, Tuscany) and renamed it Pienza, after himself. A cathedral and palaces were built in the best style of the day to decorate the city. They survive to this day. Pope Pius II Pope Pius II (, ), born Enea Silvio Bartolomeo Piccolomini (; 18 October 1405 – 14 August 1464) was Pope