Eibhlin is Irish for Eileen. Eileen is a derivative of Helen, which means
Ilene, Aileen etc. are all modern distortions--as far as I can tell--of the
Eileen. Anglicized versions popular in the US. Just as you see/hear for
example, many distortions of the Irish "Caitlin" as in Kate-Lynn and other
As for a list inquiry as to the Irish for Ellen? I will look it up in my
Irish books at the start of the work week when I can access those sources.
Enya is a separate Celtic name and has no connection with Eileen. I'll look
it up tomorrow.