Gaea, mother earth, arose from the Chaos and gave birth to
Uranus, heaven, who became her consort. Uranus hated all
their children, because he feared they might challenge his
own authority. Those children, the Titans, the Gigantes,
and the Cyclops, were banished to the nether world. Their
enraged mother eventually released the youngest titan,
Chronos (time), and encouraged him to castrate his father and
rule in his place. Later, he too was challenged by his own
son, Zeus, and he and his fellow titans were ousted from
Mount Olympus.
[ Greek Mythology, by Richard Patrick ]