 The most complete and extant rendering of the story of Philomela, Procne, and Tereus can be found in Book VI of the "Metamorphoses" of the Roman poet Ovid (Publius Ovidius Naso) (43 BC – AD 17/18), where the story reaches its full development during antiquity.It is likely that Ovid relied upon Greek and Latin sources that were available in his era such as the "Bibliotheca" of Pseudo-Apollodorus (2nd century BC), or sources that are no longer extant or exist today only in fragments—especially Sophocles' tragic drama "Tereus" (5th century BC).According to Ovid, in the fifth year of Procne's marriage to Tereus, King of Thrace and son of Ares, she asked her husband to "Let me at Athens my dear sister see / Or let her come to Thrace, and visit me."