Basically, Rey is a Kenobi.

In the Star Wars: The Clone Wars theory, Duchess Satine (secret lover to Obi-Wan Kenobi) admits that she had a child in secret, to protect his status as Jedi Master.

This child would be mandalorian.

Now, what if Satine's child is actually Sabine from Star Wars: Rebels?!

*explosions in the distance*

From there, Sabine would have a kid with some dude (I would hope Ezra) and they are gifted with a little Rey Kenobi!

BOOM

It goes even deeper than that though my friends.

Watch the video for more info...