Johannizza, the king of Wallachia, who had besieged Adrianople, gave himself no rest, for his petraries, of which he had many, cast stones night and day against the walls and towers, and damaed the walls and towers very greatly. And he set his sappers to mine the walls, and made many assaults. And well did those who were within, both Greeks and Latins, maintain themselves, and often did they beg the Emperor Henry to succour them, and wam him that, if he did not succour them, they were utterly undone. The emperor was much distraught; for when he wished to go and succour his people at Adrianople on the one side, then Theodore Lascaris pressed upon him so straitly on the other side, that of necessity he was forced to draw back.

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.