Helenus (son of Priam)

[1] He was also a Trojan prince as the son of King Priam[2] and Queen Hecuba of Troy,[3] and the twin brother of the prophetess Cassandra.

[5] Helenus predicted that if Alexander (Paris) brought home a Greek wife (i.e. Helen), the Achaeans would pursue, and overpower Troy and slay his parents and brothers.

He was also part of the Trojan forces led by his brother Hector that beat the Greeks back from the plains west of Troy, and attacked their camp in the Iliad.

Neoptolemus had taken Andromache, Helenus's sister-in-law and Hector's widow, as a slave and concubine after the fall of Troy, and fathered Molossus, Pielus and Pergamus with her.

"[11][12] Andromache bore him a son, Cestrinus,[13] who is identified with Genger or Zenter, a legendary Trojan king and father of Francus.

Some mythographers alleged that Helenus was given the hand of both Deidamia[14] and Andromache[15] in marriage, which helped consolidate his claims to Neoptolemus' kingdom.

[16] Helenus prophesied Aeneas' founding of Rome when he and his followers stopped at Buthrotum, detailed by Virgil in Aeneid Book III.