Oh, I think I might have dropped too much acid onto the shield. Let me just rub a little...
Hm, kind of hard to read, but it looks like the name Mosarn. Never heard of him. Maybe Krog knows. Krog knows many people.
Mosarn? Sounds familiar... I can't put my finger on it. Maybe it'll come to me later.
It probably isn't important. A shield can come from anywhere and not mean anything...
Quest progression Edit
This is part of The Shady Rest Inn quest chain: