Source: http://edweb.sdsu.edu/people/bdodge/scaffold/GG/greek_myth.html
Gaea is the Earth goddess. She mated with her son
Uranus to produce the remaining Titans. Gaea seems to have started
as a neolithic earth-mother worshipped before the Indo-European
invasion that eventually lead to the Hellenistic
civilization.
Uranus is the sky god and first ruler. He is the
son of Gaea , who created him without help. He then became the
husband of Gaea and together they had many offspring, including
twelve of the Titans.
His rule ended when when Cronus, encouraged by Gaea, castrated him.
He either died from the wound or withdrew from earth
Cronus was the ruling Titan who came to power by
castrating his Father Uranus. His wife was Rhea. There offspring
were the first of the Olympians. To insure his safety Cronus ate
each of the children as they were born. This worked until Rhea,
unhappy at the loss of her children, tricked Cronus into swallowing
a rock, instead of Zeus. When he grew up Zeus would revolt against
Cronus and the other Titans, defeat them, and banish them to
Tartarus in the underworld.
Cronus managed to escape to Italy, where he ruled as Saturn. The
period of his rule was said to be a golden age on earth, honored by
the Saturnalia feast.
Rhea was the wife of Cronus. Cronus made it a
practice to swallow their children. To avoid this, Rhea tricked
Cronus into swallowing a rock, saving her son Zeus.
Oceanus is the unending stream of water encircling
the world. Together with his wife Tethys produced the rivers and
the three thousand ocean nymphs.
Tethys is the wife of Oceanus. Together they
produced the rivers and the three thousand ocean nymphs.
Hyperion is the Titan of light, an early sun god.
He is the son of Gaea and Uranus. He married his sister Theia.
Their children Helius (the sun), Selene (the moon), and Eos (the
dawn).
Mnemosyne was the Titan of memory and the mother
of Muses.
Themis was the Titan of justice and order. She was
the mother of the Fates and the Seasons.
Iapetus was the father of Prometheus, Epimetheus,
Menoetius, and Atlas by Clymene.
Coeus, titan of Intelligence. Father of
Leto.
Crius
Phoebe, titan of the Moon. Mother of Leto.
Thea
Prometheus was the wisest Titan. His name means
"forethought" and he was able to foretell the future. He was the
son of Iapetus . When Zeus revolted against Cronus Prometheus
deserted the other Titans and fought on Zeus side.
By some accounts he and his brother Epimetheus were delegated by
Zeus to create man. In all accounts, Prometheus is known as the
protector and benefactor of man. He gave mankind a number of gifts
including fire. He also tricked Zeus into allowing man to keep the
best part of the animals sacrificed to the gods and to give the
gods the worst parts.
For this Zeus punished Prometheus by having him chained to a rock
with an eagle tearing at his liver. He was to be left there for all
eternity or until he agreed to disclose to Zeus which of Zeus
children would try to replace him. He was eventually rescued by
Heracles without giving in to Zeus.
Epimetheus was a stupid Titan, whose name means
"afterthought". He was the son of Iapetus. In some accounts he is
delegated, along with his brother Prometheus by Zeus to create
mankind. He also accepted the gift of Pandora from Zeus, which lead
to the introduction of evil into the world.
Atlas was the son of Iapetus. Unlike his brothers
Prometheus and Epimetheus, Atlas fought with the other Titans
supporting Cronus against Zeus. Due to Cronus's advance age Atlas
lead the Titan's in battle. As a result he was singled out by Zeus
for a special punishment and made to hold up the world on his
back.
Metis was the Titaness of the forth day and the
planet Mercury. She presided over all wisdom and knowledge. She was
seduced by Zeus and became pregnant with Athena. Zeus became
concerned over prophecies that her second child would replace Zeus.
To avoid this Zeus ate her. It is said that she is the source for
Zeus wisdom and that she still advises Zeus from his belly.
It may seem odd for Metis to have been pregnant with Athena but,
never mentioned as her mother. This is because the classic Greeks
believed that children were generated solely from the fathers
sperm. The women was thought to be nothing more than a vessel for
the fetus to grow in. Since Metis was killed well before Athena's
birth her role doesn't count.
According to Homer in the Iliad Dione is the
mother of Aphrodite.