Bright, shining light or hazelnut
Eilyn is a modern phonetic variation likely derived from Eileen or Aileen, which are Irish forms of Helen. It may also be linked to the Germanic name Evelyn, meaning 'desired' or 'water'. Its usage today is often chosen for its soft, lyrical sound and connection to light.
Less common today
Eilyn isn't in the latest US Top 1000. It last peaked at #4,629 in 2025.
US births per 5-year period, 1990–present (SSA data).
