Origin of the name ELLEN.
Etymology of the
Meaning of the baby name ELLEN.
form of Greek Helene
(q.v.), meaning "light." (History of
Christian Names, Yonge, 1884). But see note below. Usage: America,
Australia, England, Ireland, Scotland, Wales. Also see Ellin.
... Some consider this the same as Helen,
and indeed in Spanish Helen and Ellen are both represented by Elena.
A correspondent of N. Q. says the name Ellen has no possible
connexion with Helen, which is older by a thousand years at least, and
that Ellen is the feminine of Alain,
Alan, or Allan.
But it may be the same as Ailean.
(Praenomina, Charnock, 1882)