Where does “narnese” come from?

narnese (Italian) comes from Italian Narni, from Latin Narnia, from Latin Nar — A river of Umbria and tributary of the Tiber, now the Nera.

Ancestry of “narnese”, step by step

StepLanguageWordMeaning
1ItalianNarni
2LatinNarnia
3LatinNarA river of Umbria and tributary of the Tiber, now the Nera
Every word from Latin NarEvery word from Latin NarniaEvery word from Italian Narni