Light, bright, or a variant of Helen
Eilley is a rare name most famously associated with Eilley Bowers, a prominent figure in the Nevada Silver Age. It is often considered a phonetic variant of Eilidh, the Scottish Gaelic form of Helen, or a diminutive of Eileen.
Less common today
Eilley isn't in the latest US Top 1000. It last peaked at #9,095 in 2012.
US births per 5-year period, 1990βpresent (SSA data).
Famous 19th-century Nevada silver queen and fortune teller