Where does “Peloponeso” come from?

Peloponeso (Spanish) comes from Latin peloponnesus, from Ancient Greek Πελοπόννησος, from Ancient Greek νῆσος — island.

Ancestry of “Peloponeso”, step by step

StepLanguageWordMeaning
1LatinpeloponnesusThe Peloponnese
2Ancient GreekΠελοπόννησοςthe Peloponnese or Peloponnesus
3Ancient Greekνῆσοςisland
Every word from Ancient Greek νῆσος →Every word from Ancient Greek Πελοπόννησος →Every word from Latin peloponnesus →