How do I open the puzzle box?

Hint 1 of 5:

You have to wait until you've been to the Fens.

Hint 2 of 5:

Have you gotten Fulk's scroll?

Hint 3 of 5:

Why don't you try reading it, then?

Hint 4 of 5:

Those names look awfully important, don't they?

Hint 5 of 5:

Why not try the first letter of each name.