The Romans designated as Celto-Scythia those countries about the Euxine sea, including parts of Europe and Asia—those territories being inhabited by the Celto-Scythæ, that is a mixture of Celts and Scythians; and they are mentioned by Plutarch in his life of Marius.

The Thracians and the Pelasgians (a people of Thrace), who were the most ancient inhabitants of Greece, were Celto-Scythians; also the Iberians who dwelt in Iberia, between the Euxine and Caspian seas, were a mixture of Celts and Scythians, and from them were descended the Georgians and Circassians, and the Caucasian clans, who have been always famous for the valour of their men, and beauty of their women; and, in modern times, their bravery has been conspicuously displayed in their resistance to the Russians.

The ancient inhabitants of Italy were chiefly Celts, or a mixture of Celts and Scythians. The Cimbrians and Belgians, ancient people of Germany and Gaul, who sent colonies to Britain in early ages, were likewise Celto-Scythians, and so were the Iberians, Celtiberians, and Cantabrians of Spain, and the Brigantes of Spain, Ireland, and Britain; and the Milesian Irish, the Britains, the Picts, and Caledonians appear to have been all a mixture of Celts and Scythians.