The Decline and Fall of the Roman Empire · ¶351

The fraternal concord of the two sons of the great Alexius had been sometimes clouded by an opposition of interest and passion. By ambition, Isaac the Sebastocrator was excited to flight and rebellion, from whence he was reclaimed by the firmness and clemency of John the Handsome. The errors of Isaac, the father of the emperors of Trebizond, were short and venial; but John, the elder of his sons, renounced forever his religion. Provoked by a real or imaginary insult of his uncle, he escaped from the Roman to the Turkish camp: his apostasy was rewarded with the sultan’s daughter, the title of Chelebi, or noble, and the inheritance of a princely estate; and in the fifteenth century, Mahomet the Second boasted of his Imperial descent from the Comnenian family. Andronicus, the younger brother of John, son of Isaac, and grandson of Alexius Comnenus, is one of the most conspicuous characters…

Edward Gibbon · Project Gutenberg #734 (Milman edition) — public domain
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