Here they are the First Generation of the Olympian Gods (the oldest):
Zeus: King of the Gods
Roman Name: Jupiter
Duties: God of the Sky and of Weather (for the most part), ?Keeper of Oaths? he didn?t like liars?
Symbolic Representation: Lightening Bolt, Eagle, Bull, Oak, and Scepter
Commonly Known Consorts: Hera, Nyx, Themis, Demeter, Gaia, Mnemosyne, Persephone, Selene, Europa (there are many more, these are just the more ''famous'' ones)
Poseidon: ''Earth Shaker'' & ''Storm Bringer''
Roman Name: Neptune
Duties: God of the Sea, the occasional earthquake (bad tempers run in the family), and nasty storms
Symbolic Representation: Trident, Dolphins, and Horses
Contributions: Horses, Earthquakes (yay -_-), and Springs
Commonly Known Consorts: Amphitrite, Canace, Demeter, Europa, Gaia, Libia, and Medusa
Hades: ''He who has many names''
Roman Name: Orcus/Pluto
Duties: God of the Underworld, God the Dead, and God the Hidden Riches of the Earth (precious metals and minerals)-''The Rich One''
Symbolic Representation: Helm of Darkness, Cerberus (3 headed father of the hell-hounds)
Commonly Known Consorts: Persephone
Hera:
Roman Name: Juno
Duties: Goddess of families, child birth, and marriage
Symbolic Representation: Peacock, Scepter, and Diadem
Contributions: Possibly Matriarchy
Commonly Known Consort: Zeus (just one, she is completely monogamous)
Demeter:
Roman Name: Ceres
Duties: Goddess of the Harvest, hidden/unwritten law, protector of marriage.
Symbolic Representation: Scepter/Staff, Torch, and Corn
Contributions: Wheat, and Corn
Commonly Known Consorts: Zeus, and Poseidon
Hestia:
Roman Name: Vesta
Duties: Goddess of ?Hearth?, and Family Ties
Symbolic Representation: ?Fireside/Hearth?, and a Pig
Commonly Known Consorts: None Hestia is one of the Sworn Maiden Goddesses (she's a virgin)