Comments by "Billy Thetit" (@BillyThetit) on "Celtic History Decoded" channel.

Both Merovingian and Carolingian dynasties ware Frankish and thus Germanic. Even the emperor Charlemagne and his immediate descendants were still Germanic speaking in the 9th century AD.
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Of course they will.
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Light blond hair in adults is actually not as prevalent as you might think in Scandinavia, darker blond is more common.
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@EGO0808 It's just the ethnic Dutch of course. The immigrants are mostly short swarthy creatures.
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Frisians and Groningers are genetically related to the "Vikings" (= Scandinavians) and look like them, but they don't descend from them. The Vikings never settled in Frisia or Groningen in large numbers. It's an older common Germanic heritage.
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Blue eyes probably came with the general depigmentation of the skin as an adaptation to lack of sunlight in much of cloudy Northern Europe (= as a protection against rickets which was caused by lack of vitamin D due to absence of sunlight). In regions where the skies are very often grey (like in Britain or Scandinavia) the loss of pigmentation (= melanin) was so strongly selected for that not only the skin but even the eyes (and hair) lost melanine. Blue eyes are actually brown eyes without the melanin. Behind every brown eye there is a blue eye if the melanin is taken out (today this can even be done by laser). Earlier Ice Age hunters who had been hunting the megafauna (which was still around until the end of the Ice Age) in Europe may have maintained darker skin and eye colour because their diet was much fatter (animal fat contains vitamine D). The need for extreme depigmentation may have come only after the demise of the megafauna (= large ice age animals with lots of fat like mammoths, etc.) about 10 000 - 12 000 years ago.
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You are a tiny bit confused ...
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This is not well "well-documented" at all. The Roman authors didn't talk about hair colour much, and the Germanic tribes themselves were illiterate and didn't write anything at the time. Real red hair is very rare in Scandinavia today, reddish blond is however quite common. Norway and especially Iceland have more redheads because of import of Irish or Scottish people during the Viking age (slavery).
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That's because the people you ask are ignorant about their own culture. The Dutch school system is abominable. If you really had to live in Greco-Roman or Germanic culture (such as they actually were), you would go crazy at all the horrors you would witness on a daily basis - gladiatorial games, human sacrifice, tribal warfare, slavery, etc., etc. You can't even imagine what kind of hell Europe would be without the judeo-christian element in our culture. All those who glorify "pagan" Europe don't know what they are talking about - most of us keyboard heroes would not have lasted very long in those cultures.
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