Where does “Bolgiano” come from?

Bolgiano (Italian) comes from Vulgar Latin Bauzana, from Latin Bautianum, from Latin Bautius.

Ancestry of “Bolgiano”, step by step

Step	Language	Word	Meaning
1	Vulgar Latin	Bauzana	—
2	Latin	Bautianum	—
3	Latin	Bautius	—

Bolgiano — Etymology, Origin & Word History | Etymology Explorer