ELARA

a daughter of Orchomenus or Minyas, who became by Zeus the mother of the giant Tityus and Zeus, from fear of Hera, concealed her under the earth. (Apollodorus i. Argonautica) This was where she gave birth to Tityas, who some traditions state to be the son of Elara and Gaia, the earth goddess.

"Not long afterwards he (Apollo) slew also Tityus, who was a son of Zeus and Elare, daughter of Orchomenus; for her, after he had debauched her, Zeus hid under the earth for fear of Hera, and brought forth to the light the son Tityus, of monstrous size, whom she had borne in her womb." Apollodorus i