Helenus found the city of Buthrotum. After Neoptolemus left Epirus, he left Andromache and their sons in Helenus's care. Neoptolemus was killed by Orestes, Agamemmon's son, in dispute over Hermione, the daughter of Menelaus and Helen, whom Orestes had been promised as wife, but whom Neoptolemus had taken. As the kingdom of Neoptolemus was partitioned, this led to Helenus acquiring the rule of Buthrotum, as king. "Helenus, a son of Priam, was king over these Greek cities of Epirus, having succeeded to the throne and bed of Neoptolemus." Andromache bore him a son, Cestrinus, who is identified with Genger or Zenter,
Neoptolemus to them that they could defeat Troy if they could acquire the poisonous arrows of Heracles (then in Philoctetes' possession); steal the Palladium (which led to the building of the famous wooden horse of Troy); and put Achilles' son in the war. In response to the prophecy, the Greeks took steps to retrieve the arrows of Heracles and bring Neoptolemos to Troy. Odysseus was sent to retrieve Neoptolemos, then a mere teenager, from Scyros. The two then went to Lemnos to retrieve Philoctetes. Years earlier, on the way to Troy, Philoctetes was bitten by a snake on Chryse Island. Agamemnon