He showed up at the spawn point for one of the Dead Treasure Hunters (between the "back road" up to the watchtower on the way to Bleak Falls Barrow, and Anise's Cabin). He's been there for several in-game months now, and since he showed up there, I haven't found a Dead Treasure Hunter, so no notes about weapons in dungeons *sigh*....
Is there any way to get him to go away? I'd much rather have the Dead Treasure Hunters and their notes, than an NPC who's part of a quest line I won't ever do....