So I was reading through the "left-wing fantasy" thread, about how there isn't enough actually peasant-born heroes, and how any sort of aristocratic hero is still an aristocrat, and it got me thinking.
There's been quite a few peasant rebellions in the Middle Ages OTL, and a few were competent enough to nearly achieve their goals, but were stopped by both the massive panic and therefore mobilization on the part of the nobility (of not only the kingdom rebelled against, but also neighboring kingdoms), and also the treachery of the nobility towards the peasant leaders.
The first factor can be traced back to the lack of isolation in medieval Europe; all the neighboring nobility were afraid that the peasant revolt would spread to them as well, and would work with even hated rivals sometimes to suppress such a revolt.
The second is simply the mindset of the nobility towards the peasants; they didn't consider the lowborn worthy of honor.
The second factor can't be helped, since it was a mindset thing, but the lack of isolation can be helped.
So to sum it all up, is there an isolated enough part of Europe that a competent enough peasant's rebellion could be successful and long-lasting in? What would such a peasant-lead government in medieval Europe look like?
EDIT: Also, the Swiss don't count. Is there anywhere ELSE that it could happen?