Stheno and Euryale
In Greek mythology, Stheno (/ˈsθiːnoʊ, ˈsθɛnoʊ/; Ancient Greek: Σθενώ, romanized: Sthenṓ, lit. 'forceful') and Euryale (/jʊəˈraɪəli/ yuu-RY-ə-lee; Ancient Greek: Εὐρυάλη, romanized: Euryálē, lit. 'far-roaming') were two of the three sister Gorgons, the third being Medusa, who were able to turn anyone who looked at them to stone. When Perseus beheaded Medusa, the two Gorgons pursued him but were unable to catch him.