Pure lake
A modern American invention, likely combining the name Kay or Cae with the popular suffix -lynn. While its roots are debated, it is often associated with the Greek 'katharos' meaning pure or the Welsh 'cae' meaning field or meadow.
Less common today
Kaelynn isn't in the latest US Top 1000. It last peaked at #909 in 2012.
US births per 5-year period, 1990βpresent (SSA data).