Now give ear to one of the greatest marvels, and most wonderful adventures that you have ever heard tell of. At that time there was an emperor in Constantinople, whose name was Isaac, and he had a brothor, Alexius by name, whom he had ransomed from captivity among the Turks. This Alexius took his brother the emperor, tore the eyes out of his head, and made himself emperor by the aforesaid treachery. He kept Isaac a long time in prison, together with a son whose name was Alexius. This son escaped from prison, and fled in a ship to a city on the sea, which is called Ancona.