So Johannizza remained during the whole month of April (1207) before Adrianople; and he came so near to taking it that in two places he beat down the walls and towers to the ground, and his men fought hand to hand, with swords and lances, against those who were within. Also he made assaults in force, and the besieged defended themselves well; and there were many killed and wounded on one side and on the other.
As it pleases God that adventures should be ordered, so it befell that the Comans who had overrun the land, and gained much booty, and returned to the camp before Adrianople, with all their spoils, now said they would remain with Johannizza no longer, but go back to their own land. Thus the Comans abandoned Johannizza. And without them he dared not remain before Adrianople. So he departed from before the city, and left it.
And you must know that this was held to be a great miracle: that the siege of a city so near to the taking should be abandoned, and by a man possessed of such power. But as God wills, so do events befall. Those in Adrianople made no delay in begging the emperor, for the love of God, to come to them as soon as he could; for sooth it was that if Johannizza, the King of Wallachia returned, they would all be killed or taken.
Skiza Again Besieged By Theodore Lascaris – The Emperor Delivers The City
The emperor, with as many men as he possessed, had prepared to go to Adrianople, when tidings came, very grievous, that Escurion, who was admiral of the galleys of Theodore Lascaris, had entered with seventeen galleys into the straits of Abydos, in the channel of St. George, and come before Skiza, where Peter of Bracieux then was, and Payen of Orléans; and that the said Escurion was besieging the city by sea, while Theodore Lascaris was besieging it by land. Moreover, the people of the land of Skiza had rebelled against Peter of Bracieux, as also those of Marmora, and had wrought him great harm, and killed many of his people.
When these tidi . ngs came to Constantinople, they were greatly dismayed. Then did the Emperor Henry take council with his men, and his barons, and the Venetians also; and they said that if they did not succour Peter of Bracieux, and Payen of Orléans, they were but dead men, and the land would be lost. So they armed fourteen galleys in all diligence, and set in them the Venetians of most note, and all the barons of the emperor.