
I went over there to visit him, but I only found an evil mage in the cellar.
The vendor seemed to have packed up his stuff and moved out, taking most of his furniture with him, including his front door:

references:
http://www.aschulze.net/ultima/stories/story011.htm
http://www.aschulze.net/ultima/stories/story015.htm
http://www.aschulze.net/ultima/guide/br ... valley.htm