Helenus/Definition

In Greek mythology, he was the son of King Priam and Queen Hecabe of Troy and the twin brother of the prophetess Cassandra. In the Iliad, he was one of the heroic Trojan warriors who fought against the Greek warriors in the Trojan War. After the war, he founded a "mini-Troy" north of Greece on the Adriatic Sea where he was visited by the hero Aeneas, as described by the Roman poet Virgil in the Aeneid, and he predicted that Aeneas would found the city of Rome.