From the Thorsten Cragstone's Armor & Axe quest introduced in Betrayal.
A tightly scrawled Note
Sir Cartoth,
I left a letter I found for you in this chest. I am on the trail of another two letters, which I heard might be located north of Imuth Maer Doquin. I have heard reports of Tumeroks in that area. Though I am somewhat fearful, I am willing to take the risk and am headed there now.
Brontynn Marshad