Metamorphoses

Ovid

Ovid's Io cycle ends in Egypt with the birth of Epaphus — Zeus and the transformed cow's son, rival of Phaethon in the boyhood quarrel that opens the sun-chariot tale.

Prometheus Bound

Aeschylus

Aeschylus' Io hears her future: wanderings end in Egypt, where she will bear Epaphus — 'Touched' — the calf-born king who founds a line toward Libya and Danaus.

Epaphus

Son of Zeus and Io, mythical king of Egypt — the child whose name means the divine touch that ended Io's torment.