Armorica

The last Breton will have died before our Armorica shall be conquered by the barbarians as they have done the rest of Gaul.

Armoric, ar-mor′ik, n. the language of the inhabitants of Armorica, the ancient name for Brittany.

The vast lands of his almost royal abbey bordered on the frontiers of Armorica.

They contented themselves with leaving Armorica devastated and stripped of her bravest defenders.

Arvor (or Armor) is one of the bardic equivalents of Armorica, as Brittany is called in many old tales.