Ion by Euripides

Outside the temple of Apollo at Delphi, Hermes recalls the time when Creusa, the daughter of Erectheus, was raped by Apollo in a cave at Long Rocks under the Acropolis. Creusa secretly gave birth to a child, whom she left in a basket, along with some trinkets, expecting that he would be devoured by beasts. Apollo sent Hermes to bring the boy to Delphi where he has grown up as an attendant at the temple. Creusa, meanwhile, was married to the foreign-born Xuthus, son of Aeolus, the son of Zeus. Xuthus won Creusa by assisting the Athenians in a war against the Chalcidians.