Two things struck me in reading your post that may or may not be helpful:
1) The person whose tree you are reviewing may have put in the wrong location. As others have pointed out, there is a lot of garbage out there in people's trees.
2) The name/location match is totally dependent on the information provided in your and the other person's tree. It doesn't mean that the person named in a location match is your DNA link to the other person. It is up to us to review the document trail to determine where the match may be. I have had to extend my tree to siblings of 9th g-grandparents in order to find matches.