You might find this old comment to be rather interesting. It deals with European genealogy, and especially the concept that everyone of European descent can trace back to common ancestors in the Middle Ages, with Charlemagne being the example most people hold up. Most Crowned heads of state in Europe (and pretenders too), can reliably trace their ancestry back to him - which is 1200 years in the past! - and research into his ancestors continues.

This submission has been removed because it violates the rule on poll-type questions. These poll-type questions do not lend themselves to answers with a firm foundation in sources and research, and the resulting threads usually turn into monsters with enormous speculation and little focussed discussion. “Most”, “least”, "best" and "worst" questions usually lead to vague, subjective, and speculative answers.

For questions of these types, we ask that you redirect them to more appropriate subreddits, such as /r/history or /r/askhistory.