Where does “Erēni” come from?

Erēni (Rarotongan) comes from Greek Ελένη, from Ancient Greek ἑλένη, from Proto-Indo-European swel- — to smolder; burn; scorch; beam, board, frame,...

Ancestry of “Erēni”, step by step

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

Every word from Proto-Indo-European swel- →Every word from Ancient Greek ἑλένη →Every word from Greek Ελένη →