^ I think I'll change my answer to Justinian I, that was my first instinct -- but I got too technical. Because the question, "who is the last Roman"... is really implying more about culture, than the semantics of a continuously-held empire title, associated with an intact political apparatus.
And it's a good point about the language. We're talking about an empire that (culturally - which again, pertains to
people not political powers) shifts from being Latin to Greek. So the 'last Roman' would have to be... the last Latin? Makes sense.
Also didn't Justinian actually retake
Rome, along w/ most of Italy. Then very quickly, his successor got kicked out again. So that's another thing. He really was 'emperor of ROME', technically.
Post-Roman Italy is something I'd like to understand more about. Specifically, just how much did the demographics change? -With the Germanic invasions. There was a lengthy period of time when the Lombards had the entire country on lockdown. Basically, how much did the 'Italians' during Roman times change demographically, in the centuries following the Germanic invasions & occupations.
It's kind of like Iberia, in a way. After the Moorish invasion (& centuries of occupation), things were never really ever the same, demographically. But Italy as much more heavily populated than Iberia, & the Visigoths hadn't even been there very long. I guess I'm just wondering how much of a 'splash' the Germans made on the demographics. Certainly in the north, there are Italians that look exactly like Germans. And in the south, there are lots of Sicilians/Napolitans that look very... well, from the southeast, let's say. So what does it mean to be truly 'Roman'? -In Italy? The Umbrian culture? From the Latium area/region? And what actually remains of those people & their culture?
As an outsider, I've wondered about these things. I've also heard a few things that make me wonder just how 'unified' modern Italy really is. E.g., whenever there's a celebration of Italy's
unification (1871 IIRC), many seem to respond... "well, that's news to us."
I think the real Romans were the ones who lost over 20% of their entire population in a single battle to Hannibal... and didn't even let it get them down. Instead, they bounced back & defeated him (finally), kept innovating & improving their military, & built the empire that inspires awe in so many, even to this day.
-Basically resilient, strong, tough... never give up. Always learning & improving. Are those people still in Italy? Well then they could still be Roman.
Man I type too much.