Popes aka EmperorsWhoever came up with the idea of one person occupying two historical spaces was a genius. Albeit the dark one, but nevertheless... pretty creative move.
PontiffA pontiff (from Latin pontifex) was, in Roman antiquity, a member of the most illustrious of the colleges of priests of the Roman religion, the College of Pontiffs.
Who was who?I will point out three specific combos. While I could be wrong, I do think that these are matches. I also have a few other ones on my mind, but the below three should be sufficient for this little teaser.
KD: Just like I said, this is just a teaser. The OP will get updated. Meanwhile, you can play around with some related personalities. In some cases they made it easier than in others. Age, parents, habits, etc...