Troilius, in Greek mythology, was the son of Apollo from Hecuba, wife of King Priam of Troy. 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 Troilius was killed by Achilles, who later fell in love with Polyxena. During a truce, Achilles was killed visiting her. Greek mythology comprises the collected narratives of Greek gods, goddesses, heroes, and heroines, originally created and spread within an oral-poetic tradition. ... For other uses, see Apollo (disambiguation). ... Hecuba (also Hekuba or Hekabe) was a Trojan queen in Greek mythology, daughter of Dymas. ... In Greek mythology, Priam (Greek Πρίαμος) was the king of Troy during the Trojan War, and son of Laomedon. ... Walls of the excavated city of Troy (Turkey) This article is about the ancient city of Ilion as described in the works of Homer, and the location of an ancient city associated with it. ... An Oracle is a person or agency considered to be a source of wise counsel or prophetic opinion; an infallible authority, usually spiritual in nature. ... Polyxena dies by the hand of Neoptolemus on the tomb of Achilles. ...

Troilius is also the character who later inspired the tragedy Troilus and Cressida as related by Shakespeare, Bocacchio, and Chaucer, to name a few. The History of Troilus and Cressida is a play by William Shakespeare, believed to have been written around 1602, shortly after the completion of Hamlet. ...