Yes, because we interpret "da Vinci" as a surname, which it isn't, at least not exactly. But in fact, the man your college friend-group calls "Johnny from the

Yes, because we interpret "da Vinci" as a surname, which it isn't, at least not exactly. But in fact, the man your college friend-group calls "Johnny from the Bronx" in English would not be shortened to "from the Bronx".