In Greek mythology, Endymion was a handsome shepherd (or, more rarely, a king or a hunter) from Asia Minor. He was so beautiful that Selene, the moon goddess, asked Zeus (or Hypnos) to grant him eternal life so he would never leave her. Alternatively, Selene trusted and loved Endymion so much he made the decision to live forever in sleep. Either way, Zeus blessed him by putting him into an eternal sleep. Every night, Selene visited him where he was buried on Mt. Latmus near Milete, in Asia Minor. Selene and Endymion had fifty daughters including Naxos. Endymion also had a son named Aetolus, the King of Ellis. Later, he ruled Aetolia, which was named after him. Endymion had another son, Epeius, who won his father's kingdom by beating his brothers in a race.
Endymion is also the name of the main male character in the anime Sailor Moon. He is the "Prince of the Earth" (Mamoru Chiba) and he falls in love with the "Moon Princess" (called "Serena" in English)