"The analysis shows that despite the momentous historical impact on British civilisation of the Roman, Viking and Norman invasions, none of these events did much to alter the basic biological makeup of people living here. The findings support records suggesting that few high ranking Roman officials settled in Britain and that they and their families remained largely segregated from the local Celts." - Todd Hoff

"The Danish Vikings, who ruled over large swathes of Britain from 865AD, are known to have inter-married with locals, but the latest study shows that the conquering force, while powerful, must have comprised relatively few fighters. “There were very large numbers of people - hundreds of thousands - in those parts of Britain, so to have a substantial impact on genetics there would have to be very large numbers of them,” said Robinson. “The fact that we don’t see that reflects the numbers rather than the relative allure or lack thereof of Scandinavian men to British women.” - bentley

Well, the current ruling house are also Germans descended Sophia of Hanover! So, we've always had close relations throughout history with Germany, so no surprise. - Halil