Where does “Epirus” come from?

Epirus (Dutch) comes from Middle Dutch epirus, from Latin Ēpīrus, from Ancient Greek Ἤπειρος, from Proto-Hellenic ā́peřřos, from Proto-Indo-European Heh₂per-.

Ancestry of “Epirus”, step by step

Step	Language	Word	Meaning
1	Middle Dutch	epirus	—
2	Latin	Ēpīrus	—
3	Ancient Greek	Ἤπειρος	Epirus; mainland
4	Proto-Hellenic	ā́peřřos	—
5	Proto-Indo-European	Heh₂per-	—

Every word from Proto-Indo-European Heh₂per- →Every word from Proto-Hellenic ā́peřřos →Every word from Ancient Greek Ἤπειρος →