How did Medusa come to be history?

Some say Medusa was born ugly. Many stories about how Medusa came to be is numerous. The most famous must be with her and Athena.

One day three beautiful women served as priestest in Athenas temple. One day Poseidan showed love to one priestest, Medusa. They dated in Athenas temple and Athena was so angry over Medusa's disrespect that she turned her in to a monster along with her sisters.