@jespah,
It is possible that there were blue eyed folk down in the Nazareth area back then. People did travel, both on land and by ship. I'm not saying that Heyzeus and Mary were blue eyed, just that there is a possibility, same as the chance of getting red hair or blonde hair when living in the middle east region.
Or maybe Heyzeus was actually the product of a sinful union between two Swedes who had an overextended vacation and made up a story to cover their tracks.