 He assisted his father in the conquest of Cagliari, and later accompanied his Archbishop (Ubaldo Lanfranchi, Archbishop of Pisa) on the Third Crusade.He claims to have led the force defeating the Visconti in a civil war, only to later hand Pisa back to them while marrying into the Visconti family.Being closely related to many high ranking clerics, he maintained close relations with the papacy until his death.