In Greek mythology, Dia or Eioneus was a daughter of Deioneus and the mother of Peirithous by her husband, Ixion, according to one legend, or according to another, by Zeus. Peirithous is said to have received his name from the fact that Zeus when he attempted to seduce Dia ran around her in the form of a horse.
Dia is an alternative name for Hebe. Research Dia