Zeus
The god of the sky, heavens, justice, and lighting. He is also the King of the Gods.
Spouse: Hera
Children: *deep breath* Angelos, Apollo, Ares, Artemis, Athena, Dionysus, Enyo, Eris, Ersa, Hebe, Helen of Troy, Hephaestus, Heracles, Hermes, Minos, Pandia, Persophone, Perseus, the Horea, the Litae, the Muses, and the Moirai
Parents: Cronus and Rhea

Poseidon
The god of the sea and horses.
Spouse: Amphitrite
Children: Triton, Polyphemus, Agenor, Neleus, Pelias, Desponie, and Pegasus
Parents: Cronus and Rhea

Hades
The god of earth metals and the King of the Underworld.
Spouse: Persephone
Children: None
Parents: Cronus and Rhea

Hera
The goddess of marriage and the Queen of the Gods.
Spouse: Zeus
Children: Ares, Hebe, Hephaestus, Enyo, Angelos, and Eileithyia
Parents: Cronus and Rhea

Demeter
The goddess of harvest and fertility
Spouse: None
Children: Persophone, Despoina, Arion, and Chrysothemis
Parents: Cronus and Rhea

Hestia
The goddess of the hearth. Virgin goddess.
Spouse: None
Children: None
Parents: Cronus and Rhea

Athena
The goddess of wisdom and war strategy. Virgin goddess.
Spouse: None
Children: None
Parents: Zeus and Metis. Zeus swallowed Metis when she was pregnant because of a prophecy, but Athena popped out of his forehead, fully grown and clothed.

Apollo
The god of the sun, healing, prophecy, archery, and music. Twin brother of Artemis.
Spouse: None
Children: Asclupius, Aristaeus, and Orpheus
Parents: Zeus and Leto

Artemis
The goddess of the moon, archery, virgins, childbirth, and the hunt. Virgin goddess. Twin sister of Apollo. Leader of The Hunters of Artemis.
Spouse: None
Children: None
Parents: Zeus and Leto

Ares
The god of war.
Spouse: None, but had frequent affairs with Aphrodite
Children: Eros, Phobos, Harmonia, Demios, and the Amazons
Parents: Zeus and Hera

Hephaestus
The god of the forge.
Spouse: Aphrodite
Children: None
Parents: Hera and Zeus. Some stories say that Hera produced Hephaestus on her own

Dionysus
The god of wine and parties.
Spouse: Ariadne
Children: Hymen, Thaos, and Staphylus
Parents: Zeus and Semele. Zeus accedentaly killed a pregnant Semele and he saved Dionysus by putting him in his thigh and giving birth to him.

Aphrodite
The goddess of beauty, love, and procreation.
Spouse: Hephaestus. She married him unwillingly and had frequent affairs with Ares
Children: Eros, Harmonia, and the Erotes
Parents: Formed by the seafoam and Uranus' manly parts

Hermes
The god of theves, travelers, trade routes, is the messenger of the gods and guide to the underworld.
Spouse: None
Children: Tyche, Autolycus, Angelia, and Myrtilus
Parents: Zeus and Maia

Minor Gods

Persephone
The goddess of springtime and the Queen of the Underworld.
Spouse: Hades
Children: None
Parents: Demeter and Zeus

Hecate
The goddess of magic and witchcraft.
Spouse: None
Children: None
Parents: Perses and Asteria

Eros
The god of sexual love.
Spouse: Psyche
Children: Hedone
Parents: Aphrodite and Ares

Iris
The goddess of the rainbow and messenger to Hera.
Spouse: Zephrus
Children: None
Parents: Thaumas and Electra

Eos
The goddess of the dawn
Spouse: Astraeus
Children: Astraea
Parents: Hyperion and Theia

More to come