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 (general) with his contingent, refused to comply. In response, Eumenes immediately marched against him, defeated his army, and compelled all the Macedonian troops in his service to take the oath of fidelity to Perdiccas. Neoptolemus managed to escape with a small body of cavalry and joined Craterus, whom he persuaded to march immediately against Eumenes, while the latter was still celebrating his victory and unprepared for a fresh attack. But their cautious adversary was not taken by surprise and met his enemies in a pitched battle. During this battle, Neoptolemus commanded the left wing, on which he was opposed to Eumenes