In Greek mythology, who is the twin sister of Helenus?
Helenus a legendary Trojan king and father of Francus. Some mythographers alleged that Helenus married Neoptolemus's mother, Deidamia, as well as Andromache, in order to consolidate his claims on part of Neoptolemus' kingdom. Helenus prophesied Aeneas' founding of Rome when he and his followers stopped at Buthrotum, detailed by Virgil in "Aeneid" Book III. Helenus In Greek mythology, Helenus (; , "Helenos", ) was the son of King Priam and Queen Hecuba of Troy, and the twin brother of the prophetess Cassandra. He was also called Scamandrios. According to legend, Cassandra, having been given the power of prophecy by Apollo, taught
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,