Louis Killen tells the Mr. Fox story, and follows it with a nice, four verse version of the song "Reynardine", but I don't know that he's ever recorded it. However, in performance he credits (to the best of my memory) A.L.Lloyd with getting one or both in the east of England. in his version of the story, th ending has the heroine's brothers kill Mr. Fox with their swords, "while he stood there, howling like an animal." I've always taken this to be a broad hint at the supernatural, making the story much more interesting to me than your average neighborhood serial killer.