Do you think Merlin is Lily's father?

I can see it foreshadowing... The next season supposedly includes Merlin and the moon necklace Lily has that was the only thing she had from her father? Isn't that like one of Merlin's symbols? Correct me if I'm wrong, I don't know a lot about Merlin. But then again, that seems like something that would end up being a plot twist....