When north Wales exploded into open revolt against an exploitative English elite.  Countless towns were laid waste, their populations massacred.   Henry IV’s retaliatory expedition was humiliated and sent packing back to England.  Conwy Castle — that glittering jewel of royal might — was captured.  And a new Prince of Wales was declared: Owain Glyndefrdwy, or Owain Glyndwr for short. Now in 1401, Glyndwr moved on.  Huge numbers flocked to his banner raised in the mountains