Aegina was the mother of Aeacus and a lover of Zeus. She would become the great-grandmother of Achilles and the grandmother of Peleus.
It was often said that Zeus took the form of an eagle and abducted Aegina, taking her to an island near Attica. Aegina's father, Asopus, chased after them; his search took him to Corinth, where Sisyphus was king. Sisyphus, having chanced to see a great bird bearing a maiden away to a nearby island, informed Asopus. Though Asopus pursued them, Zeus threw down his thunderbolts, sending Asopus back to his own waters. Aegina eventually gave birth to her son, Aeacus, who became king of the island.