Celts
The Celts were a large group of Caucasian tribes in Europe. They first appeared in the early Iron Age, around 1200 B.C. in Austria.  The name 'Celt' comes from the Greeks.  The Romans called them "Gauls".  They came from the Hallstatt and La Tène cultures. Their culture and genes spread through much of Europe, and by the time the Greeks and later the Romans started emerging, the British Isles and parts of western, southern and eastern Europe were Celtic - the most prominent Celtic tribes were in Gaul. The Celts spoke Celtic languages. Today, the Celtic languages that remain are the Breton, Cornish, Welsh and Gaelic languages.