Genghis Khan (1,000+ children?, 100s of Women?)
When Genghis Khan wasn't busy on the field of battle, he was quite the swordsman in the bedroom. His romantic conquests were so prolific that in 2007, Russian scientists estimated that the father of Mongolian democracy had an astonishing 16 million male descendants living today. Doing a little backward math, that means Genghis had hundreds and perhaps thousands of children in his lifetime, with hundreds of women. And he passed on a little of that legendary libido to his oldest son, Tushi, who had a mere 40 sons.