[20] The valor of Theodore Lascaris was signalized in the two sieges of Constantinople.

After the flight of Mourzoufle, when the Latins were already in the city, he offered himself as their emperor to the soldiers and people; and his ambition, which might be virtuous, was undoubtedly brave.

Could he have infused a soul into the multitude, they might have crushed the strangers under their feet: their abject despair refused his aid; and Theodore retired to breathe the air of freedom in Anatolia, beyond the immediate view and pursuit of the conquerors.

Under the title, at first of despot, and afterwards of emperor, he drew to his standard the bolder spirits, who were fortified against slavery by the contempt of life; and as every means was lawful for the public safety implored without scruple the alliance of the Turkish sultan Nice, where Theodore established his residence, Prusa and Philadelphia, Smyrna and Ephesus, opened their gates to their deliverer: he derived strength and reputation from his victories, and even from his defeats; and the successor of Constantine preserved a fragment of the empire from the banks of the Maeander to the suburbs of Nicomedia, and at length of Constantinople.

Another portion, distant and obscure, was possessed by the lineal heir of the Comneni, a son of the virtuous Manuel, a grandson of the tyrant Andronicus.