A daughter of the river god Asopus.
Asopus was born on the island of Oenone or Oenopia, whither Aegina had been carried by Zeus, in the guise of an eagle, to secure her from the anger of her parents, and whence this island was afterwards called Aegina.From Smith's Dictionary of Greek and Roman Biography and Mythology
Him Metope, herself a daughter of the river Ladon, married and bore two sons, Ismenus and Pelagon, and twenty daughters, of whom one, Aegina, was carried off by Zeus.
In search of her Asopus came to Corinth, and learned from Sisyphus that the ravisher was Zeus. Asopus pursued him, but Zeus, by hurling thunderbolts, sent him away back to his own streams hence coals are fetched to this day from the streams of that river.
And having conveyed Aegina to the island then named Oenone, but now called Aegina after her, Zeus cohabited with her and begot a son Aeacus on her. As Aeacus was alone in the island, Zeus made the ants into men for him.
Then, like Amphytrion, but a real Jove,
In fair Alcmena's arms he cool'd his love.
In fluid gold to Danae's heart he came,
Aegina felt him in a lambent flame.
He took Mnemosyne in shepherd's make,
And for Deois was a speckled snake.