Where does “Ragusa Vecchia” come from?

Ragusa Vecchia (Italian) comes from Italian Ragusa, from Latin Ragusia, from Proto-Albanian *rāguša.

Ancestry of “Ragusa Vecchia”, step by step

Step	Language	Word	Meaning
1	Italian	Ragusa	Dubrovnik
2	Latin	Ragusia	—
3	Proto-Albanian	*rāguša	—