Stheno Medusa was beheaded by Perseus, Stheno and Euryale tried to kill him, but failed due to his use of Hades' cap, becoming invisible. Stheno In Greek mythology, Stheno ( or ; Greek: Σθενώ, English translation: "forceful"), was the eldest of the Gorgons, vicious female monsters with brass hands, sharp fangs and "hair" made of living venomous snakes. The daughter of Phorcys and Ceto, Stheno was born in the caverns beneath Mount Olympus. She and her sister Euryale were both immortal, and the third sister, Medusa, was mortal. Of the three Gorgons, she was known to be the most independent and
Greek mythology the existence of this corpus of data is a strong indication that many elements of Greek mythology have strong factual and historical roots. Mythical narration plays an important role in nearly every genre of Greek literature. Nevertheless, the only general mythographical handbook to survive from Greek antiquity was the "Library" of Pseudo-Apollodorus. This work attempts to reconcile the contradictory tales of the poets and provides a grand summary of traditional Greek mythology and heroic legends. Apollodorus of Athens lived from to and wrote on many of these topics. His writings may have formed the basis for the collection; however the