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 captured Helenos, and made Andromache, then a widow, his concubine. The ghost of Achilles appeared to the survivors of the war, demanding Polyxena, the Trojan princess, be sacrificed before anybody could leave. Neoptolemos did so. With Andromache, Helenos and Phoenix, Neoptolemos sailed to the Epirot Islands and then became the King of Epirus. With the enslaved Andromache, Neoptolemos was the father of Molossos and through him, according to the myth, an ancestor of Olympias, the mother of Alexander the Great. According to Hyginus, his son with Andromache was Amphialos: [123] CXXIII. NEOPTOLEMUS Neoptolemus, son of Achilles and Deidamia, begat Amphialus