The earliest inhabitants of the British Isles are believed to have come from the Iberian Peninsula, which is part of Spain in approximately 2000 B.C. These people were short, with dark hair and brown eyes. About 400 B.C., Celtic tribes, from a region along the Danube River in Eastern Europe and from an area in Switzerland and France moved into the British Islands. One of the tribes, called Brythons (Britains) settled in what we now call England and Wales, the other called the Gaedelic (Gaelic) settled in Ireland and Scotland. They intermarried with the Iberians and the Iberian culture disappeared. The Celtic culture was of great importance and still exists. Probably the most famous Celts were the legendary King Arthur and the Knights of the Round Table.