The barons were dreading the tedium of an inactive winter, when a new excitement was afforded by the appearance at Zara of ambassadors from Philip, Emperor of Suabia. There is reason to believe that Dandolo and the Marquis Boniface (of Monteferrato) had already agreed with Philip that these ambassadors should be sent, and that all which follows and depends upon the proposals of the Emperor had been arranged to gratify the selfish ends of the Emperor, the Marquis, and the Doge before they left Venice at all; and was to be done at the expense of the Crusaders, and in direct opposition to the desire of Innocent and to the interests of the Church.

But since the wisest and most erudite of the historians have not discovered the whole truth about this and various other matters of this great crusade,—which certainly might with great aptness be called a war of the Venetians against their enemies and for their own aggrandizement,—we cannot be expected to do it.

The ambassadors brought letters setting forth the misfortunes of the young Alexius, brother-in-law of Philip, and legitimate heir to the Greek Empire. His father, Isaac, had been blinded and thrown into prison by his own brother, who now usurped the throne. The young prince had wandered over Europe, seeking aid; and hearing of the great number of Crusaders who had congregated at Venice, he had come to entreat them for the restoration of his father. Alexius hastily followed the ambassadors; and Monteferrato, who was his near kinsman, proposed to receive him in accordance with his rank. The troops turned out, the silver trumpets of the Doge sounded a welcome; and leaders, monks, and soldiers alike waited to hear Alexius plead his own cause.

He had much to tell of his griefs and sufferings, and after rehearsing these he made such royal promises concerning the return he would make for their aid as appealed to the Venetians, the barons, the priests, and to the soldiers and sailors as well. He would pay the four hundred thousand pounds which the Greeks had long owed the Republic; he would go himself, or send ten thousand men to join the Crusade for one year, and during his life maintain five hundred knights for the defence of Jerusalem; he would pay large bounties to the rank and file of the expedition; and finally, he would renounce the Greek heresy and secure the submission of the Eastern Church to the authority of Rome. This last eased the consciences of those who heard him, and even seemed sufficient to satisfy the demands of Innocent III.

Philip had sent to the Crusaders his own stipulations, which accorded with the offers of Alexius, and it remained for the assembled forces to decide for their acceptance or rejection. The barons felt that the conquest of Constantinople was a legitimate object for the Crusaders, as she had been an insurmountable hindrance to the subjection of Palestine. Dandolo straightway perceived the enormous advantages that would accrue to Venice if her chief market-place and source of wealth could be ruled by a Western power, and we must believe that the pleas for humanity and justice found an echo in all hearts.

We cannot exaggerate the pitch of excitement to which the debates were now carried. The opposers were those who feared the Pope, and were comparatively few. Weary of all these long delays, they wished only to stand at once on the holy soil they sought to conquer in the name of God and of his Son. Most of these withdrew from the camp, which was far less harmful to the expedition than to have discontents in their midst.

At length the Republic of Venice, eight barons of France, and the Counts of Flanders, Blois, and St. Pol confirmed by oaths and seals a treaty of alliance, offensive and defensive, which was despatched to Philip for his signature. The advantage to the Venetians seemed all the greater since the Republic had long tried in vain to induce the Greeks to pay their debt; and it is more than probable that had not the Crusaders sought his aid, Dandolo would have endeavored to obtain by the sword what he had failed to get by repeated embassies and urgent solicitations.

The winter ended at last; and late in April, 1203, the expedition again set sail. The Zaratines at once revolted in celebration of the event; but the younger Dandolo had little difficulty in re-subjugating them, after which he made such a treaty as ended the rebellions of this turbulent people.

The Crusaders made their first landing at Corfu, and awaited the young Alexius, who had gone to Durazzo to receive the allegiance of the governor. The people of Corfu received him as their lawful sovereign, while the Doge and Boniface treated him with the consideration due an emperor. Serious difficulties now arose among the allies. Those who disapproved of going to Constantinople organized a parliament by themselves. Twelve powerful chiefs were openly of this party, and others had promised to join them; they were likely to control more than half of the army. The Doge and Boniface, as well as their adherents, were greatly alarmed by this sedition; and they, with all the leaders who adhered to the Venetians, proceeded to the parliament, taking the young Alexius with them.

According to Villehardouin, the opposition leaders were on horseback when the Doge and his friends arrived. They dismounted and went to meet their visitors. The Barons then fell at their feet, weeping copiously, and declared, that they would not rise from their knees until the others had promised not to leave the army. Dandolo, Boniface, and all of them wept; never was there a greater flood of tears, and in the end the malcontents agreed to remain with the army until Michaelmas Day, the leaders of the other party swearing on relics, that after that day, at a fortnight's notice, they would provide a fleet for all who wished to go to Syria.