I refer to Thomas Costain's "The Magnificent Century" in which he describes a dispossessed knight known as Williken Of The Weld harrassing the French and the traitorous English earls from the safety of the old forest between London and the sea. Costain ascribes the Robin hood myth to this origin, in which case the man, about whom little is known, could have been a crusader. Other historians describe Robin as a folk creation, much like King Arthur, a web of romance built on a frame of misty history. It's hardly worth arguing about, but you ought at least (like Kendall) bring history rather than fiction to the history discussion.