Where does “Yelena” come from?

Yelena comes from Russian Еле́на, from Latin Helena, from Ancient Greek Ἑλένη, ultimately from Ancient Greek Ἕλενος.

Ancestry of “Yelena”, step by step

Step	Language	Word	Meaning
1	Russian	Еле́на	Helen
2	Latin	Helena	—
3	Ancient Greek	ἑλένη	torch, firebrand; corposant, St. Elmo's fire;...
4	Proto-Indo-European	swel-	to smolder; burn; scorch; beam, board, frame,...

Yelena — Etymology, Origin & Word History | Etymology Explorer