I'm curious: Isn't that where the Basques are concentrated. Then the Moors couldn;t handle them either?
Galicia... Basque? Cough, hack, gasp.... No, Man! We conquered those Basque pansies. We were the meanest, nastiest, head-chopping, bunch of savages that the Romans ever encountered in Iberia.
We were Celts!
We were the last Celtic tribe conquered by the Romans on the European continent. After that, the Visigoths didn't conquer us and the Muslim Moors did not conquer us.
Today, the traditional musical instrument of Galicia is the bagpipe. During the Spanish colonial period, a very large number of Galicians (Gallegos) came to the Spanish colonies, especially Cuba. So, when you meet a blue eyed, blonde Cuban or Cuban American such as myself, don't say, "Gee, you don't look Cuban". Say, "Were your ancestors Gallegos?".
Anthropologists are not sure what the Basque origins are as their language has no common roots with any other European language. Some scholars think they may be the descendants of the original Iberians before the coming of the Celtic, Greek, Carthegenian and Roman invasions of ancient Iberia.