son of Theseus and Phaedra, was chosen to accompany Diomedes to Troy, to demand the restoration of Helen. During his residence at the court of Priam he gained the affections of Laodice, the second daughter of the king, by whom he had a son called Munitus. He is mentioned by Virgil as one of the heroes who concealed themselves in the wooden horse. He founded a city in Phrygia, called Acamantium; and one of the Athenian tribes was called after him, Acamantis. Homer mentions two other heroes of this name: one a Thracian prince, who came to succour Priam; another a son of Antenor.