But a revolution so extensive was not consummated without creating much discontent; and Menestheus, the rival of Thêseus,—the first specimen, as we are told, of an artful demagogue,—took advantage of this feeling to assail and undermine him. Thêseus had quitted Attica, to accompany and assist his friend Peirithöus, in his journey down to the under-world, in order to carry off the goddess Persephonê,—or (as those who were critical in legendary story preferred recounting) in a journey to the residence of Aidôneus, king of the Molossians in Epirus, to carry off his daughter. In this enterprise, Peirithöus perished, while Thêseus was cast into prison, from whence he was only liberated by the intercession of Hêraklês. It was during his temporary absence, that the Tyndarids Castôr and Pollux invaded Attica for the purpose of recovering their sister Helen, whom Thêseus had at a former period taken away from Sparta and deposited at Aphidnæ; and the partisans of Menestheus took advantage both of the absence of Thêseus and of the calamity which his licentiousness had brought upon the country, to ruin his popularity with the people. When he returned, he found them no longer disposed to endure his dominion, or to continue to him the honors which their previous feelings of gratitude had conferred. Having, therefore, placed his sons under the protection of Elephenôr, in Eubœa, he sought an asylum with Lykomêdês, prince of Scyros, from whom, however, he received nothing but an insidious welcome and a traitorous death.[46] [46] Plutarch, Thêseus, c. 34-35. Menestheus, succeeding to the honors of the expatriated hero, commanded the Athenian troops at the Siege of Troy. But though he survived the capture, he never returned to Athens,—different stories being related of the place where he and his companions settled. During this interval, the feelings of the Athenians having changed, they restored the sons of Thêseus, who had served at Troy under Elephenôr, and had returned unhurt, to the station and functions of their father. The Theseids Demophoôn, Oxyntas, Apheidas, and Thymœtês had successively filled this post for the space of about sixty years,[47] when the Dorian invaders of Peloponnêsus (as has been before related) compelled Melanthus and the Neleid family to abandon their kingdom of Pylus. The refugees found shelter at Athens, where a fortunate adventure soon raised Melanthus to the throne. A war breaking out between the Athenians and Bœotians, respecting the boundary tract of Œnoê, the Bœotian king Xanthus challenged Thymœtês to single combat: the latter declining to accept it, Melanthus not only stood forward in his place, but practised a cunning stratagem with such success as to kill his adversary. He was forthwith chosen king, Thymœtês being constrained to resign.[48] [47] Eusebius, Chronic. Can. pp. 228-229, ed. Scaliger; Pausan. ii. 18, 7.