[US Navy Vet]

HUMMM let’s see could they have got it from one of THESE guys:
http://en.wikipedia.org/wiki/Sons_of_Noah
!!!???

[Theoria]

Why don't think it was something more mundane, perhaps local genetic interbreeding, from being isolated or thru genetic manipulation for the desired ‘blonde’ look?

[RegulatorCountry]

I've seen an old genealogy of my surname, woven into a tapestry, that purported to show the line back from Essex to Wales, from Wales to Ireland, from Ireland to Milesia/Iberia (Spain), from Spain to Scythia, and so on back to Japheth, son of Noah.

Such genealogies were popular in the late medieval period among the merchant class and minor nobles, with something of a Victorian era revival of the practice, it lent a little grandeur to those striving for such. Think Millicent Bucket, lol.

The one I saw did follow the legendary path to the letter, but included an individual belonging to a no doubt mythical people of Ireland, the Tuatha Dé Danann, so it's apocryphal.