Where does “Còrsega” come from?

Còrsega (Catalan) comes from Latin Corsica, from Ancient Greek Κορσίς.

Ancestry of “Còrsega”, step by step

Step	Language	Word	Meaning
1	Latin	Corsica	—
2	Ancient Greek	Κορσίς	—

Còrsega — Etymology, Origin & Word History | Etymology Explorer