I can see where you might assume who your ancestors are even thought you probably don't have an actual genealogy chart. Could there also have been other blue eyed blond Celts from other Celtic tribes who passed through the area? Or could it come from a traveling Jew? The Bible refers to David as "ruddy and fair",
With the Celts now firmly traced to Central Turkey (NYTimes 12/25/01) in great numbers at least as far back as 300BC, and elsewhere in the region south of the Caspian Sea even earlier, maybe all the evidence isn't in yet?
A good little book to keep track of who was moving where and when in ancient history is "The Penguin Atlas of Ancient History" published by Penguin Classics (the folk who publish the classical works in inexpensive paperback editions.) The Penguin Atlas has it's maps arranged by centuries and shaded to indicated which peoples lived in what areas at a given time.
In regards to the Celtic world, they shared a common language and culture and spread over vast areas but were divided into many small tribes within relatively short distances. The area of Galicia and Asturias in Spain consisted of one of the oldest areas of continuous Celtic settlemnet dating back to before 1000 B.C.
Protected by the sea to the north and west and by the Cantabrian mountains to the south, they remained a relatively pure Celtic culture until the 19 B.C. Roman conquest. Even afterwards, their ornery nature and mountain fighting skills ensured that subsequent invaders such as the Goths and Moors left Galicia and Asturias alone. As a result, ethnographically, it remained an isolated preserve such as northern Scotland and southern Ireland while waves of invaders swept through the rest of Europe changing the ethnography of areas such as Germany and France from century to century.
See the "Celts in Spain" section here for a brif general description.
The Celts in Turkey were holdovers of the Celtic kingdom set up there by the Celtic invasion of Greece and Turkey during Hellenistic times. The famous statue "The Dying Gaul" from the city-state of Pergamon dates from Pergamon's battles with the Celts during this period .
What is fascinating about the Celtic culture is that customs such as the wearing of the Celtic torques (the gold heavy collar worn around the neck as seen on the Dying Gaul) were retained by Celtic tribes as separated by time and distance as were the Celts from Galicia in Spain and the Celts in Galatia in Turkey.
Celtic torque from Galicia, Spain
