I think he was a fictitious character who was given the credit for Sir William Marshalls deeds, that was invented to give people hope in a time of need.
@ServantOfTheGoddess and yet if the powerful caught him today, his fate would likely be little better than his fate had he been caught in the time the stories were written.
As with many people throughout history we tend to focus on the good parts and forget any bad. There is some truth to saying history is written by the victor.
@swirlie it is amazing how nobody marks him a villain, but yet progressive tax systems that build social systems from the excess wealth of the rich are so frequently demonized.