Charles hurried to Rome to attend the enthronement of Pope Gregory X on 27March 1272. The new pope was determined to put an end to the conflicts between the Guelphs and the Ghibellines. While in Rome Charles met with the Guelph leaders who had been exiled from Genoa. After they offered him the office of captain of the people, Charles promised military assistance to them. In November 1272 Charles commanded his officials to take prisoner all Genoese within his territories, except for the Guelphs, and to seize their property. His fleet occupied Ajaccio in Corsica. Pope Gregory condemned his aggressive policy, but proposed that the Genoese should elect Guelph officials. Ignoring the Pope's proposal, the Genoese made alliance with Alfonso X of Castile, William VII of Montferrat and the Ghibelline towns of Lombardy in October 1273.
Charles hurried to Rome to attend the enthronement of Pope Gregory X on 27March 1272. The new pope was determined to put an end to the conflicts between the Guelphs and the Ghibellines. While in Rome Charles met with the Guelph leaders who had been exiled from Genoa. After they offered him the office of captain of the people, Charles promised military assistance to them. In November 1272 Charles commanded his officials to take prisoner all Genoese within his territories, except for the Guelphs and to seize their ,property. His fleet occupied Ajaccio in Corsica. Pope Gregory condemned his aggressive policy, but proposed that the Genoese should elect G,uelph officials. Ignoring the Pope's proposal the Genoese made alliance with Alfonso X of Castile William VII of Montferrat and the Ghibelline towns of Lombardy in O,ctober 1273.