general synod at Paris. He was appointed again, by Pope Gregory X on 1 August 1274, and he served continuously in France until 1279. His first task was to raise support and money for a Crusade against Manfred, the Hohenstaufen candidate for the Imperial Crown. He immediately became deeply involved in the negotiations for papal support for the assumption of the crown of Sicily by Charles of Anjou. As Legate he presided over several synods on reform, and on the raising of funds for Pope Gregory's crusade. The most important of these was held at Bourges on 13 September 1276. Signatures on papal bulls indicate that Cardinal Simon was back in Viterbo by 11 January 1268. In a letter of 14 or 15 January 1268, Pope Clement IV wrote to Cardinal Simon de Brion that he had heard that the Cardinal had fallen from his horse and in the accident had injured his leg. He also wrote that Conradin and Ludwig Duke of Bavaria were at Verona, and were pressing for Pavia. A general war was likely. Cardinal Simon's injury must not have been severe, since, on 3 April 1268, the Pope wrote to him with the request (not an order) that he undertake a legation to Germany (Teutonia), if he wished and if it were possible. The Pope needed a prudent and faithful man, who had clean hands and eyes wide open, who could stay centered on the business and let himself stray neither right nor left, who could preserve the Empire, keep the Apostolic See free from scandal, and the neighboring kingdoms free from danger. In vetting names, Simon seemed the most suitable. Pope Clement IV (Guy Foulques) fell ill on the Feast of S. Cecilia (22 November), and died at Viterbo on 29 November 1268. He had governed the Church for three years, nine months, and twenty-four days. The See of Peter was vacant for two years and nine months. Cardinal Simon de Brion came from France to attend the Conclave, which took place in the Episcopal Palace, next to the Cathedral of S. Lorenzo in Viterbo. He was the senior cardinal-priest. Around Pentecost of 1270 (1 June), Cardinal Simon and Cardinal Riccardo Annibaldi of S. Angelo had to leave the Conclave and retire to their residences for the sake of their health. On 22 August 1270, he was one of the signatories to the letter of