within the city, now found themselves under the necessity of joining forces with the infidel to attack a Christian prince.
Upon the declaration of war by the sultan, Theodore pushed forward into the valley of the Meander, and a battle was fought which, if the Byzantine authorities are to be trusted, was decided in single combat between the two sovereigns. The sultan was killed, and the empire of Nicaea was saved. The Emperor Henry, however, when he heard of the extent of the loss in Theodore's army exclaimed, 'The Greek is not conqueror: he is ruined.'
So far from being ruined, his success caused many Greeks to flock into his empire from Constantinople. When, in 1214, the Emperor Henry again declared war, Theodore was ready for him; and as the Greeks in Epirus had commenced a vigorous attack on the crusading barons in Macedonia, Henry was glad to make a peace which left Theodore undisputed master of a territory bounded on the west by a line from Heraclea on the Black Sea to Ismidt, thence to Cyzicus and to the coast just north of Pergamos. The fruitful valleys of the Meander, the Cayster, and the Hermus marked his boundaries on the south-west.
Theodore died in 1222. The first duty of the Greeks when driven out of Constantinople was to make themselves secure against the conquerors and to prevent the progress of the crusading armies into Asia Minor. This duty had been effectually done by Theodore. During the eighteen years of his reign he had made his capital and its beautiful neighbourhood the rallying-place of what was best in the Greekspeaking populations of Asia Minor and of Thrace. He had checked the progress of the crusaders into Asia Minor and had left to his successors the task of working for the recovery of Constantinople.
Henry succeeds Baldwin, 1205–1216.Meantime, the history of the Latin conquerors of Constantinople had been one of almost continuous disaster. The first Emperor Baldwin had been lost in an encounter with the Bulgarians near Adrianople in April 1205, and was probably killed. As his fate remained doubtful, his
