The Romanian name "Ileana" (ILEANA) also seems to be related to the name Eileen; all the related names appear to be feminine variations of the extremely-old Greek name Hellen or "the mythological progenitor of the Hellenes (Ἕλληνες), the son of Deucalion (or sometimes Zeus) and Pyrrha, brother of Amphictyon and father of..."; the KEY elements in names are the consonants, while the vowels vary according to various cultures!
Eileen name meaning is bright. I think it's a pretty name.
― Anonymous User 10/11/2015
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No, Eileen is NOT gaelic for the Greek "Helen". Think about it! The Greek language is not that old! Eilean is the Scots gaelic for a small island. Many Scots name their children after their islands: Skye, Iona, Isla(y), Ailsa.