Wales
The English words Wales and Welsh come from the old Germanic word Walh (plural: Walha). Walh itself came from a Celtic tribe, called the Volcae by the Romans. That was eventually used for the name of all Celts and later to all people who lived in the Roman empire. The Anglo-Saxons who lived in England and who spoke Old English called the people living in Wales Wælisc and the land itself Wēalas. Other names that come from these origins Wallonia, Wallachia, and Vlachs.