While the exact movement remains debated, Celtic presence eventually covered much of France and northern Spain, and reached .

As the Celtic peoples ... marauding Germanic tribes further isolated the Celts in the north and west of Britain, in the Breton areas of France, and in Celtiberian Spain. These waves of invasion ...

It is believed that three forms of Celtic were spoken on the continent of Europe: the Gaulish of France and northern Italy, the Celtiberian of Spain and ... for the Gaulish tribes during the ...

One of the best observers of the tribes of Celtic Britain was Tacitus who wrote ... and suggested their ancestors might be from Spain because of the similarities in appearance with some peoples ...