on 4 January 2010 . http://www.mythencyclopedia.com/Ar-Be/Athena.html . Retrieved 2009-11-24 .   ^ According to Hesiod 's Theogony , Metis was Athena's mother, but, according to Homer 's Iliad , she sprang forth from Zeus' head and had no mother. ^ Porus was Athena's half-brother because he was the son of Metis