While the Emperor Baldwin was thus at Salonika, and the land surrendering to his good pleasure and commandment, the Marquis Boniface of Montferrat, with all his people and a great quantity of Greeks who held to his side, marched to Adrianople and besieged it, and pitched his tents and pavilions round about. Now Eustace of Saubruic was therein, with the people whom the emperor had left there, and they mounted the walls and towers and made ready to defend themselves.

Then took Eustace of Saubruic two messengers and sent them, riding night and day, to Constantinople. And they came to the Doge of Venice, and to Count Louis, and to those who had been left in the city by the Emperor Baldwin, and told them that Eustace of Saubruic would have them know that the emperor and the marquis were embroiled together, and that the marquis had seized Demotica, which was one of the strongest castles in Roumania, and one of the richest, and that he was besieging them in Adrianople. And when those in Constantinople heard this they were moved with anger, for they thought most surely that all their conquests would be lost.

Then assembled in the palace of Blachernae the Doge of Venice, and Count Louis of Blois and Chartres, and the other barons that were in Constantinople; and much were they distraught, and greatly were they angered, and fiercely did they complain of those who had put enmity between the emperor and the marquis. At the prayer of the Doge of Venice and of Count Louis, Geoffry of Villehardouin, the Marshal of Champagne, was enjoined to go to the siege of Adrianople, and appease the war, if he could, because he was well in favour with the marquis, and therefore they thought he would have more influence than any other. And he, because of their prayers, and of their great need, said he would go willingly; and he took with him Manasses of l'Isle, who was one of the good knights of the host, and one of the most honoured. So they departed from Constantinople, and rode day by day till they came to Adrianople, where the siege was going on. And when the marquis heard thereof, he came out of the camp and went to meet them. With him came James of Avesnes, and William of Champlitte, and Hugh of Colemi, and Otho of la Roche, who were the chief counsellors of the marquis. And when he saw the envoys, he did them much honour and showed them much fair seeming.

Geoffry the Marshal, with whom he was on very good terms, spoke to him very sharply, reproaching him with the fashion in which he had taken the land of the emperor and besieged the emperor's people in Adrianople, and that without apprising those in Constantinople, who surely would have obtained such redress as was due if the emperor had done him any wrong. And the marquis disculpated himself much, and said it was because of the wrong the emperor had done him that he had acted in such sort.

So wrought Geoffry, the Marshal of Champagne, with the help of God, and of the barons who were in the confidence of the marquis, and who loved the said Geoffry well, that the marquis assured him he would leave the matter in the hands of the Doge of Venice, and of Count Louis of Blois and Chartres, and of Conon of Béthune, and of Geoffry of Villehardouin, the Marshal-all of whom well knew what was the covenant made between himself and the emperor. So was a truce established between those in the camp and those in the city.

And you must know that Geoffry the Marshal, and Manasses of l'Isle, were right joyously looked upon, both by those in the camp and those in the city, for very strongly did either side wish for peace. And in such measure as the Franks rejoiced, so were the Greeks dolent, because right willingly would they have seen the Franks quarrelling and at war. Thus was the siege of Adrianople raised, and the marquis returned with all his people to Demotica, where was the empress his wife.