Where does “persia” come from?

persia (Finnish) comes from Latin Persia, from Latin Persa, from Ancient Greek Περσίς, from Old Persian 𐎱𐎠𐎼𐎿, from Proto-Iranian párcuš, from Proto-Indo-Iranian párćuš, from Proto-Indo-European pérḱus — chest; rib.

persia (Finnish): The modern Persian language; The old Persian...