Poseidon Poseidon was the child of Croons and Rhea. His Siblings were Zeus and Hades. Poseidon Vass the god of the sea, his brother Zeus Vass god of the sky, and Hades was the god of the underworld. When Poseidon, Zeus, and Hades grew up they overthrew the Titans and became the sole rulers of the world. They were considered Olympian. Poseidon was the second most powerful god, after his brother Zeus. When Poseidon was angry he caused Earthquakes. He was often pictured with his trident. His Roman name was Neptune. The first king of Athens, Crops, had to find a patron deity for the city state of Athens. The devout Olympian gods who were interested in the patronage were Poseidon and Athena. They presented themselves to Crops and he asked them to offer a gift valuable to Athens. Poseidon hit the ground with his trident and a water wall grew, but found that the water was salty. Athena struck the ground with her spear, opening a crack; she then kneeled down and planted an olive branch which grew to an olive tree.
Crops was very happy with Ethane’s gift and chose her to lay claim of the city of Athens and named the city after her, Poseidon was angry at Crops’5 choice and so Poseidon cursed the city of Athena to never have enough water from there on. Poseidon married Amphorae. He wanted to marry Demeter, but in order to do that she wanted Poseidon to create the most beautiful creature the world had ever seen. After several tries Poseidon created a horse. But soon realized his love for Demeter had cooled.