How interesting. Garamante=Black Dutch. Seems like a catch-all phrase.
"At other times and places, they were called Bohemians (as in La Boheme) because they were thought to be from what is now the Czech Republic."
Beethoven and Hitler are two famous examples of this group. It is interesting to imagine Hitler's reaction to someone telling him he probably got his heavy, black hair from Black African ancestry.
Since this was so long ago, with population movement and inter-marriage, all Europeans must have some ancestry from these Black African soldiers.
In sixty generations, a person could leave 1,000,000,000,000,000,000 descendants with just two children per person each generation so long as no descendants married each other.
Obviously, after a time, many descendants will marry each other, but still it works out statistically that most people from that long ago who left descendants at all are ancestors of everyone in Europe today.
The tendency for people to stay in their own community explains why we can see the effects along the Danube and in the Black Forest in the people with black hair and dark eyes but do not see it far afield like Iceland.
The concentration is far greater at the point of origin, but the dispersion radiates out to everywhere given enough time.
Thanks for the further info.