The woman who has been mentioned several times in this thread is (was?) named Peggy Childers. I haven't seen or heard about her in quite a few years, thus the "was?". She was delusional at times, and had a few impossible stories to tell, but AFAIK she was harmless. I saw her several times a year in the late '90s and early '00s.
Peggy alternated between Fulhardt Knob and Cornelius Creek shelters in Virginia. At Fulhardt, she once had a camp set up away from the shelter--very well organized with a triangular layout for sleeping, cooking, and bathroom breaks in three locations. Decent gear, too, donated by townsfolk and hikers. When she wasn't talking about her run-ins with Joe Kennedy, Larry Flynt, or the royals of England she made a lot of sense--and she was informative about survival in the woods and in a society that doesn't treat those out of the mainstream very nicely.
In 1998, the Associated Press did a story about her which made it into newspapers across the nation. She was once arrested by federal officers for something minor, and stayed away from the AT for awhile after that. But she did return, and I'd love to know what happened to her in the years since.