The term "Celtic," like "musician," or "luthier," has different meanings, depending on personal and historic context. For an historic perspective, here's a link to an interactive map of the Roman Empire:
http://resourcesforhistory.com/map.htm Clicking on the 237 BC link on the timeline indicates that a fairly large area of modern Portugal and some of north-western Spain was then considered Celtic.This area included a major Celtic settlement, Coimbra. In addition, La Caruna, another important city, was apparently under some sort of Celtic influence. Geoff
