Theseus

Now Aegeus, king of Athens, desiring to have children, is said to have received from the Pythian priestess the celebrated oracle in which she bade him to have intercourse with no woman until he came to Athens. But Aegeus thought the words of the command somewhat obscure, and therefore turned aside to Troezen and communicated to Pittheus the words of the god, which ran as follows:—

1. Loose not the wine-skin’s jutting neck, great chief of the people,
2. Until thou shalt have come once more to the city of Athens.

This dark saying Pittheus apparently understood, and persuaded him, or beguiled him, to have intercourse with his daughter Aethra. Aegeus did so, and then learning that it was the daughter of Pittheus with whom he had consorted, and suspecting that she was with child by him, he left a sword and a pair of sandals hidden under a great rock, which had a hollow in it just large enough to receive these objects.