In Greek mythology, Phaedra was the daughter of King Minos and Queen Pasiphae of Crete and the younger sister of Ariadne. Phaedra married Theseus, king of Athens and slayer of the beast known as the Minotaur. Earlier, Ariadne had helped him kill the Minotaur and escape from Crete.
Theseus had a son named Hippolytus from a previous marriage to an Amazon queen, and after his marriage to Phaedra, they went to see him. Phaedra fell madly in love with Hippolytus, but he was disgusted by her feelings. Rejected, Phaedra killed herself and left a note saying that Hippolytus had raped her. When Theseus found the note, he asked the god Poseidon* to take revenge on Hippolytus. One day as Hippolytus was driving his chariot by the seashore, Poseidon sent a sea monster to frighten Hippolytus's horses. The horses bolted, tangling Hippolytus in the reins and killing him. The Greek playwright Euripides used the story of Phaedra and Hippolytus as the basis for his tragedy Hippolytus.