‘There’s no such person as “da Vinci”.’
Sure, sure, and there’s no such person as Julius Caesar, or Charlamagne, or Barbarossa, because only people’s birth names count.
Of course, you realize “da Vinci” isn’t some sort of surname or epithet, but merely means he was “from Venice,” right? As opposed to Charlemagne, which means “Charles the Great,” and totally WAS an epithet he was given. Or Julius Caesar (King Julius). Or Barbarossa, which was a nickname.
On the other hand, even though Jennifer Lopez tried to go by “Jennie from the Bronx,” it would be silly to call her, “Hey! From the Bronx! Call me!”
Julius Caesar is a real name. Charlemagne is a real name plus a descriptor. Barbarossa is a nickname. “da Vinci” is just a place name — where Leonardo was born. He was illegitimate and had no last name. It’s like saying “from Aachen” and expecting people to know that you mean Charlemagne.