"Oh, you don't need to talk to Blacktree himself!  No, no, you just need to talk to his caravan master, Bjerkold Rockhead, the surliest dwarf you've ever seen.  If you want my advice, talk to him in the morning.  He only grows surlier as he drinks, and he drinks whenever he's awake.  Don't know how he's still alive, to be honest.  You can find him over at the Purple Raven, though." The bartender said easily, while the barmaid shrugged and wandered off after flashing a smile at the man.