Helenus

in Greek legend, one of the sons of Priam, king of Troy. He was celebrated as a prophet, and was the only son of Priam who did not lose his life during the siege of Troy. Foreseeing the fall of the city he deserted his countrymen and joined the Greeks. According to some accounts he did not do this of his own free will, but was led to it by the cunning of Ulysses, who wished to obtain the benefit of Helenus' prophetic power. Virgil represents him as having been taken to Epirus by the Greeks as a slave. He had then married Andromache, widow of his brother Hector; and the two, Helenus and Andromache, had become rulers of Epirus. Shakespeare introduces Helenus as one of the characters in Troilus and Cressida.