In the beginning, long before the existence of the country we now call Sidheon, or the land before that called Anwyn, there was no time, gods or people, only the sea and the land. Where the sea met the land a white mare made of sea-foam was born called Eiocha.
On the land grew a huge oak tree and in order to stay alive Eiocha ate the sea-foam seeds from that tree. As time passed, the seeds transformed into a child inside her and she gave birth to the god Cernunnos. The pains of giving birth were very strong and in her agony, Eiocha ripped a piece of bark from the oak tree and hurled it into the sea. The piece of bark sank into the watery depths of the swirling, frothing, stormy sea and from it deep-sea giants were created.
Cernunnos felt lonely and outnumbered because there were so many sea giants and no other gods with whom he could share anything. Therefore, along with Eiocha, they created more gods; Maponos the God of Youth, Tauranis the God of Thunder, Teutates the Protector and the fertility goddess Epona. For many years they were all very happy together growing up on the land, but as time passed Eiocha’s children became adults and she started to feel sad with her life on the land. Longing to be back in the sea, Eiocha left the land to return to her life as a sea-mare and became known as Tethra goddess of the deep.
With Eiocha gone, the gods and goddesses, needing someone to worship them, took bark from the oak tree and created the first man and woman. Cernunnos then made animals from the bark and ordered the oak to grow into a beautiful forest for all his children and animals to use. Epona made horses which she dedicated to her beloved mother Eiocha. The other gods took branches from the oak tree; Teutates fashioned a bow, arrows and clubs, Tauranis made thunderbolts and Maponos created a harp.
The deep-sea giants grew jealous of the harmony between the gods, people, animals, and trees. Their envy turned into anger, leading them to attack and try to destroy the paradise. During the battle, the sacred oak tree provided safety for the gods and goddesses. Tauranis used thunderbolts to separate the sea and land, while Maponos split the sky and threw it at the giants. Despite the giants' use of waves for protection, Teutates' archery skills defeated them, driving them back to the sea.
However, the paradise was devastated, and most humans were killed. Epona managed to save one man and woman, who became the ancestors of all humans in the land.