Combination of Ray and Lynn
Railynn is a modern American invention, created by blending the name Ray (meaning 'beam of light' or 'counsel') with the popular suffix Lynn (meaning 'lake'). It follows the contemporary trend of creating unique, feminine names by joining established phonetic elements.
Less common today
Railynn isn't in the latest US Top 1000. It last peaked at #2,301 in 2018.
US births per 5-year period, 1990βpresent (SSA data).