Where does “Peloponnes” come from?

Peloponnes (German) comes from Latin peloponnesus, from Ancient Greek Πελοπόννησος, from Ancient Greek νῆσος — island.

Ancestry of “Peloponnes”, step by step

Step	Language	Word	Meaning
1	Latin	peloponnesus	—
2	Ancient Greek	Πελοπόννησος	—
3	Ancient Greek	νῆσος	island

Peloponnes — Etymology, Origin & Word History | Etymology Explorer