Combination of Eri and Lynn; possibly noble or lake
Erilyn is a modern American coinage, likely created by blending the prefix 'Eri-' (often derived from Erika or Erin) with the popular suffix '-lyn'. While its specific etymology is fluid, it carries the combined associations of 'noble ruler' from Erika and 'lake' or 'waterfall' from the Welsh-derived Lynn.
Less common today
Erilyn isn't in the latest US Top 1000. It last peaked at #8,468 in 2013.
US births per 5-year period, 1990–present (SSA data).
