An old man (thus the name) living in Echocall Village, ever since King Occon claimed it. He's endured decades of living here on his own, including heat waves, breath fever, flooding, resulting in a cranky old geezer who doesn't quite... Understand the situation he's in.
Mua refuses to budge on the prospect of leaving his home.
Forge-Bound Iron: As it turns out, the Old Man is hiding contraband - goods stolen from the Disfavored.
Old Man Mua refuses to vacate the soon-to-be-garrisoned-by-the-Chorus-and-you-do-not-want-to-be-there village. You have a couple of options at your disposal, including trying to reason, killing him (you monster), or just leaving the poor soul alone.