Dia (mythology)

Dia ("bright sky") in Greek mythology was the mother of the Lapith Pirithous, whose marriage to Hippodameia was the occasion of the Lapiths' battle with the Centaurs. Like many nymph mothers of heroic figures, Dia had both a mortal husband, "cloud-like" Ixion, and an immortal father of her child— Zeus, a sky-god himself, who wielded the thunderbolt. In the plains of Thessaly under all this open sky, Dia's son was a horseman.