RHETIA was a nymph of the north Aegean island of Samothrake. She was the mother of the nine Samothrakian Korybantes (Corybantes)--orgiastic dancers of the Mysteries--by the god Apollon. Rhetia was probably the goddess who presided over the recitation of the stories of the Mysteries to the Initiates.
She was probably associated with the Mousai (Muses), two of whom are named as the mother of the Samothrakian Korybantes in alternate genealogies. Her name also means "the reciter" or "speaker" which may suggest a goddess Muse.
Strabo, Geography 10. 3. 21 (trans. Jones) (Greek geographer C1st B.C. to C1st A.D.) :
"Pherekydes [Greek mythographer C5th B.C.] says that nine Kyrbantes (Corybantes) were sprung from Apollon and Rhetia, and that they took up their abode in Samothrake; and that three Kabeiroi (Cabiri)and three Nymphai called Kabeirides (Cabirides) were the children of Kabeiro (Cabeiro), the daughter of [the sea-god] Proteus, and Hephaistos, and that sacred rites were instituted in honor of each triad."
- Strabo, Geography - Greek Geography C1st B.C. - C1st A.D.