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 I of Epirus the Princess Deidamia in Greek mythology, and also the mythical progenitor of the ruling dynasty of the Molossians of ancient Epirus. On the death of Alcetas, Neoptolemus and his brother Arybbas agreed to divide the kingdom, and continued to rule their respective portions without any interruption of the harmony between them, until the death of Neoptolemus, which, according to German historian Johann Gustav Droysen, may be placed about 360 BC. The first epigraphical evidence of the Molossian League goes back to 370 BC under Neoptolemus. Neoptolemus I of Epirus Neoptolemus I of Epirus () (370–357 BC) was a Greek king