Troilius

A Greek mythological figure. With Hecuba, wife of King Priam of Troy, Apollo had a son named Troilius. An oracle prophesied that Troy would not be defeated as long as Troilius reached the age of twenty alive. He and his sister, Polyxena were ambushed and killed by Achilles.

Apollo also fell in love with Cassandra, daughter of Hecuba and Priam, and Troilius' half-sister. He promised Cassandra the gift of prophecy to seduce her, but she rejected him afterwards. Enraged, Apollo cursed her with the ability to know the future but the curse that no one would ever believe her.