Little is known about is origins.
Cernunnos (The horned one) didn't born with Horns. They grew after a relationship with a Religious woman. She was so often unfaithful that the horns grew and took root all the way to the inside of the brain.
He likes to be surrounded by beings that live in the underworld.
It is said that he can heal with just the touch of his aura. Many other tales were told about him. In the present times there are still sites that tell these tales.
He has been seen with wild bulls and loves spiders for company since young age. For he was born and raised in lands with beauty and wealth of wild life.