The Tourist's Guide through the Country of Caernarvon

Not far from hence, on the top of a hill, is an ancient Tower; its form is circular, its height about 20 feet, the diameter 12; its walls compose only two thirds of a circle, the rest is open. In all probability it was a Watch Tower, and connected with Diganwy as a place of retreat. The name of this District, Creuddin, seems to be derived from Creu, or Crau, blood, or gore, and Din, or Dinas, a fortified place; and was so denominated, in all probability, from the many bloody battles fought ...