2. In The Greek Myths (8.a, ff.), Robert Graves notes early myths about the birth of Athena whose worship began in Crete after arriving there as early as 4,000 BC. According to Graves, Hesiod (c. 700 BC) relates that Athena was a parthenogenous daughter of Metis, wisdom or knowledge, a Titan who ruled the fourth day and the planet Mercury.
3.
4. Although at Mycenaean Knossos Athena appears before Zeus does —in Linear B, as a-ta-na po-ti-ni-ja, "Mistress Athena"— in the Classical Olympian pantheon, Athena was remade as the favorite daughter of Zeus, born fully armed from his forehead.The story of her birth comes in several versions. In the one most commonly cited, Zeus lay with Metis, the goddess of crafty thought and wisdom, but he immediately feared the consequences. It had been prophesied that Metis would bear children more powerful than the sire, even Zeus himself. In order to forestall these dire consequences, after lying with Metis, Zeus "put her away inside his own belly;" he "swallowed her down all of a sudden." He was too late: Metis already conceived
5. Eventually Zeus experienced an enormous headache; Prometheus, Hephaestus, Hermes, or Palaemon (depending on the sources examined) cleaved Zeus's head with the double-headed Minoan axe, the labrys . Athena leaped from Zeus's head, fully grown and armed — with a shout, "and pealed to the broad sky her clarion cry of war. And Ouranos trembled to hear, and Mother Gaia.