From Ilus and Assaracus the Trojan and Dardanian lines diverge; the former passing from Ilus to Laomedôn, Priam and Hectôr; the latter from Assaracus to Capys, Anchisês and Æneas. Ilus founded in the plain of Troy the holy city of Ilium; Assaracus and his descendants remained sovereigns of Dardania.[678] [678] Iliad, xx. 236. It was under the proud Laomedôn, son of Ilus, that Poseidôn and Apollo underwent, by command of Zeus, a temporary servitude; the former building the walls of the town, the latter tending the flocks and herds. When their task was completed and the penal period had expired, they claimed the stipulated reward; but Laomedôn angrily repudiated their demand, and even threatened to cut off their ears, to tie them hand and foot, and to sell them in some distant island as slaves.[679] He was punished for this treachery by a sea-monster, whom Poseidôn sent to ravage his fields and to destroy his subjects. Laomedôn publicly offered the immortal horses given by Zeus to his father Trôs, as a reward to any one who would destroy the monster. But an oracle declared that a virgin of noble blood must be surrendered to him, and the lot fell upon Hesionê, daughter of Laomedôn himself. Hêraklês arriving at this critical moment, killed the monster by the aid of a fort built for him by Athênê and the Trojans,[680] so as to rescue both the exposed maiden and the people; but Laomedôn, by a second act of perfidy, gave him mortal horses in place of the matchless animals which had been promised. Thus defrauded of his due, Hêraklês equipped six ships, attacked and captured Troy and killed Laomedôn,[681] giving Hesionê to his friend and auxiliary Telamôn, to whom she bore the celebrated archer Teukros.[682] A painful sense of this expedition was preserved among the inhabitants of the historical town of Ilium, who offered no worship to Hêraklês.[683] [679] Iliad, vii. 451; xxi. 456. Hesiod. ap. Schol. Lycophr. 393. [680] Iliad, xx. 145; Dionys. Hal. i. 52. [681] Iliad, v. 640. Meneklês (ap. Schol. Venet. _ad loc._) affirmed that this expedition of Hêraklês was a fiction; but Dikæarchus gave, besides, other exploits of the hero in the same neighborhood, at Thêbê Hypoplakiê (Schol. Iliad, vi. 396). [682] Diodôr. iv. 32-49. Compare Venet. Schol. ad Iliad. viii. 284. [683] Strabo, xiii. p. 596. Among all the sons of Laomedôn, Priam[684] was the only one who had remonstrated against the refusal of the well-earned guerdon of Hêraklês; for which the hero recompensed him by placing him on the throne. Many and distinguished were his sons and daughters, as well by his wife Hekabê, daughter of Kisseus, as by other women.[685] Among the sons were Hectôr,[686] Paris, Dêiphobus, Helenus, Trôilus, Politês, Polydôrus; among the daughters Laodikê, Kreüsa, Polyxena, and Kassandra.