If it had not been for Owain Glyndwr's 15-year struggle against overwhelming odds, the Welsh would not have survived as Europe's oldest nation. His war is the defining era in the history of Wales. Yet Glyndwr is hardly known - a cultured, literate warrior who was never betrayed or captured and vanished into history. No less than six separate invasions were beaten back by Glyndwr's army of volunteers before he disappeared, his family and children either...