How do I get King John to sign the Magna Carta?

Hint 1 of 14:

To get to Runnymeade, you'll need better transportation.

Hint 2 of 14:

That horse will do the trick.  Get on it.

Hint 3 of 14:

A messenger will come with word that John will be getting the
money he needs so he doesn't have to sign the Magna Carta.

Hint 4 of 14:

The messenger will have to come through the forest (SE of Runnymeade).

Hint 5 of 14:

Maybe you should consider waiting for him.

Hint 6 of 14:

You'll have to hide, or else he'll be able to avoid you.

Hint 7 of 14:

Try going behind the tree to the NE.

Hint 8 of 14:

When the courier comes, Robin Hood and his men will stop the courier.

Hint 9 of 14:

But you need to act quickly before he wakes up.

Hint 10 of 14:

He's probably carrying a letter to King John.