-[Advanced] The Holy Grail ( looking for male / abstract idea )

So I was watching this show called America Unearthed last night and they were talking about the Holy Grail. Some believe it is the cup that Jesus drank from at the last supper. Others believe it is the secret bloodline of Jesus and Mary Magdalene. The latter is where my idea comes from. What if Jesus and Mary did have a child who turned out to be immortal? At a certain age, her aging slowed ( probably around age 15 or so ) and she "outlived" both of her parents. After the Templar Knights were founded, she sought refuge with the Knights and the swore to protect her. When the Knights were banished it was said that some escaped to what is now America before Christopher Colombus ever sailed to the "New World". These Knights took the Daughter with them in order to protect her.

Fast forward to modern day America. A "Grail Hunter" has come across a trail that no one was supposed to find. Using the Kingston Rune Stone and other resources, he has almost found his way to the Holy Grail. Its too bad someone else has been looking for her too...

So basically I want to play the "Holy Grail" and I need the "Grail Hunter" to complete this little game. The other person who is after them will be played by me as well though he won't hold a big part in any of this until later on.

Anyone? I know its an odd type of RP but its an idea I just really liked.

I am interested. Who'll you play?

I'll be playing the daughter in this one.

Is that alright with you?

It's fine.