Where does “elen” come from?

elen (Romanian) comes from Greek Έλληνας, from Ancient Greek Ἕλλην, from Ancient Greek Ἑλλοί, from Ancient Greek ἕλλα, from Proto-Hellenic *héllā.

elen (Romanian): Hellene, Greek

Definitions

Step	Language	Word	Meaning
1	Greek	Έλληνας	Greek or Hellene
2	Ancient Greek	Ἕλλην	Greek, one who is from Greece or speaks Greek;...
3	Ancient Greek	Ἑλλοί	The Greeks in Dodona
4	Ancient Greek	ἕλλα	seat
5	Proto-Hellenic	*héllā	—