Mathematically speaking, virtually everyone in Europe is related to Charlemagne.
A Coin of King Charlemagne (approx. 812-814 AD)
This is because everyone has two parents, four grandparents, eight great-grandparents and so on.
By the time you get to the 13th century, you have more direct ancestors than have ever been human beings – about 80 billion. Therefore you must have shared ancestors.
In 1995, a man called Mark Humphries at Dublin University discovered this information. He discovered his was wife was King Edward III’s great-granddaughter 20 generations down the line.
After closer examination, he discovered his wife was also related to Hermann Goring and American explorer Daniel Boone. He then managed to calculate the mathematics of the information.
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