Also this bit, apparently written by accomplished historians if the author credentials are to be trusted, made me chuckle:
In mainland Europe in the Dark Ages (roughly 500 to 1000 A.D.), populations were so sparse, spread out, and loosely organized that last names were not necessarily needed to function in society.
That is an extremely Anglocentric TIL.
Also this bit, apparently written by accomplished historians if the author credentials are to be trusted, made me chuckle: