The original Celtic name for Devonshire, the name used by the Britons whom Caesar found here when he landed, was probably Dyfnaint, for a Latinized form of it, Dumnonia or Damnonia, was used by Diodorus Siculus when writing of the province of Devon and Cornwall in the third century A. D. So that the name by which the men of Devon call their country is the name by which those ancient men called it who erected the stone menhirs on Dartmoor, and built the great earth-camp of Clovelly Dykes, or the smaller bold stronghold of Countisbury.