There were many.
Why do you think the fables of one ancient storyteller somehow make the fables of another ancient storyteller true? How do you think legends spread?
You show me an ancient Egyptian document, or a great shining gold pillar, and I'll take it all back.(oh that's right, they all conveniently disappeared!)
Right now, what you have is the equivalent of saying that the tooth fairy is real because you read about Peter Pan and it mentions his friend Tinkerbell.