Caergwrle castle in Flintshire, near the English border was built in the late 13th century by the Prince of Wales Dafydd ap Gruffydd for King Edward I. However, Dafydd rebelled against the king in 1282, the castle was attacked and sabotaged by a retreating Dafydd. Edward gave the castle to his wife Eleanor of Castile. Unfortunately a fire broke out at the castle the following year.
Plans to repair the castle and build a town around it were abandoned and the castle gradually fell into disrepair, the Black Prince noted it was in ruins when he inherited the castle in the late 14th century. A great deal of the castle no longer exists including the west curtain wall and most of the south tower. Much of this stone may have been looted to make millstones.
