Allowing for the changes it has doubtless undergone through the centuries, the Basque language may furnish us with a clue to the language of at least one group in the Neolithic cultures of Europe. The first people in England about whose language we have definite knowledge are the Celts. It used to be assumed that the coming of the Celts to England coincided with the introduction of bronze into the island. But the use of bronze probably preceded the Celts by several centuries.