Between a stubborn Emperor, a stiff-necked Papacy, and obstinate communes, relations strained taut. The first break occurred between Emperor and Papacy. The Popes honestly desired to reconquer Jerusalem, which had fallen back into infidel hands, and incessantly urged a crusade; but perhaps at this juncture their zeal was heightened by a notion that the most effective defensive measure against the Emperor would be to keep him busy in Palestine. Frederick had solemnly promised to go. He had also solemnly promised to keep the crowns of Germany and of the Two Sicilies separate, by putting the latter on his son's head; but instead of this separation he kept both crowns on his own head, and secured both for his son as his successor. In spite of this violated promise, Pope Honorius, a gentle soul, devoutly eager for the crusade, crowned Frederick Emperor (1220), upon Frederick's renewed promise that he would start on the crusade within a year. The year passed, then another and another, and Frederick, with his crowns safe on his head, did not move a foot towards Jerusalem. The gentle Honorius remonstrated; Frederick made vows, excuses, protestations, but did not go. Finally the mild Pope died, and was succeeded by the venerable Cardinal Ugolino, Gregory IX, (1227-1241). Ugolino was a member of the _Conti_ family of Latium (so preeminently counts that they took their name from their title), and a near relation to Innocent III. His indomitable character proved his kinship. Blameless in private life, a warm friend to St. Francis, deeply versed in ecclesiastical affairs, he had a benign face and noble presence; in fact, to quote the gentle Pope Honorius, he was "a Cedar of Lebanon in the Park of the Church." But, in spite of his virtue, his training, and his fourscore years, he was a very Hotspur, fiery, impatient, and headstrong. It was he who had put the crusader's cross into Frederick's hands and had received his crusader's vow; and now, having bottled up his wrath during the pontificate of Honorius, he could brook no further delay. Frederick made ready to go. Ships and men were gathered at Brindisi, and, in spite of a pestilence which killed many soldiers, the fleet set sail. A few days later word was brought that Frederick had put about and disembarked in Italy.