The first establishment at Ephyrê, or Corinth, had been founded by Sisyphus, another of the sons of Æolus, brother of Salmôneus and Krêtheus.[260] The Æolid Sisyphus was distinguished as an unexampled master of cunning and deceit. He blocked up the road along the isthmus, and killed the strangers who came along it by rolling down upon them great stones from the mountains above. He was more than a match even for the arch thief Autolycus, the son of Hermês, who derived from his father the gift of changing the color and shape of stolen goods, so that they could no longer be recognized: Sisyphus, by marking his sheep under the foot, detected Autolycus when he stole them, and obliged him to restore the plunder. His penetration discovered the amour of Zeus with the nymph Ægina, daughter of the river-god Asôpus. Zeus had carried her off to the island of Œnônê (which subsequently bore the name of Ægina); upon which Asôpus, eager to recover her, inquired of Sisyphus whither she was gone: the latter told him what had happened, on condition that he should provide a spring of water on the summit of the Acro-Corinthus. Zeus, indignant with Sisyphus for this revelation, inflicted upon him in Hadês the punishment of perpetually heaving up a hill a great and heavy stone, which, so soon as it attained the summit, rolled back again in spite of all his efforts, with irresistible force into the plain.[261] [260] See Euripid. Æol.—Fragm. 1, Dindorf; Dikæarch. Vit. Græc. p. 22. [261] Respecting Sisyphus, see Apollodôr. i. 9, 3; iii. 12, 6. Pausan. ii. 5, 1. Schol. ad Iliad. i. 180. Another legend about the amour of Sisyphus with Tyrô, is in Hygin. fab. 60, and about the manner in which he overreached even Hadês (Pherekydês ap. Schol. Iliad. vi. 153). The stone rolled by Sisyphus in the under-world appears in Odyss. xi. 592. The name of Sisyphus was given during the historical age to men of craft and stratagem, such as Derkyllidês (Xenoph. Hellenic. iii. 1, 8). He passed for the real father of Odysseus, though Heyne (ad Apollodôr. i. 9, 3) treats this as another Sisyphus, whereby he destroys the suitableness of the predicate as regards Odysseus. The duplication and triplication of synonymous personages is an ordinary resource for the purpose of reducing the legends into a seeming chronological sequence. Even in the days of Eumêlus a religious mystery was observed respecting the tombs of Sisyphus and Nêleus,—the latter had also died at Corinth,—no one could say where they were buried (Pausan. ii. 2, 2). Sisyphus even overreached Persephonê, and made his escape from the under-world (Theognis, 702).