Lucius III was elected on 1 September 1181, but had to be consecrated and enthroned at Velletri, due to the hostility of the Romans. He was only allowed back to Rome at the end of October, but in mid-March 1182, having refused to grant the
consuetudines conceded by earlier popes, he was forced to retreat to Velletri. In the meantime, refugees from Tusculum, which had been destroyed earlier in the century by the Roman commune, began to rebuild their fortifications. Annoyed by the challenge, the Roman commune reopened the war. Pope Lucius took the part of the Tusculans, but as the Romans had one success after another, he called for aid from the imperial Vicar in Italy, Archbishop Christian of Mainz, who managed to drive the Romans back. The Romans renewed their offensive, devastated the territory of Tusculum in April 1184, and then turned their wrath against Latium. The pope then fled to the Emperor Frederick, who was at Verona. The pope wanted aid against the Romans, of course, but there was also the issue of the inheritance of Countess Mathilda of Tuscany, which had been willed to Saint Peter, but which was occupied by the emperor, on the grounds that it was part of the empire and Mathilda and her husbands had been his vassals. Frederick wanted the pope to preside at an imperial coronation for
his son Henry. When the pope adamantly refused, Henry invaded and ravaged the Roman campagna; Frederick besieged the pope in Verona, forbidding appeals to the pope from anyone in his domains, and obstructing appeals from elsewhere. Anyone apprehended in an attempt to reach the papal curia or returning from it was imprisoned and subjected to torture. Lucius died on 25 November 1185, still residing in Verona, while an angry and uncooperative emperor resided at the imperial headquarters in Pavia. The
election of his successor, which was brief and unanimous, took place on the next day. The successful candidate was Humbertus Crivelli, the Archbishop of Milan and Cardinal of S. Lorenzo in Damaso, " a violent and unyielding spirit, and a strong opponent of Frederick (Barbarossa)," in the words of Ferdinand Gregorovius. He took the name
Urban III, and maintained all of the uncompromising policies of Lucius III. Frederick continued his policy of blockading the pope and cardinals inside Verona into 1187. Urban had reached the decision to excommunicate the emperor, for usurpation of spiritualities, but he was dissuaded by the pleas of the inhabitants of Verona. Shortly after 22 September 1187, Urban and the cardinals escaped from Verona, and by 3 October had found refuge in Ferrara, where Urban died on 20 October. ==List of participants==