Slender or fair
A modern phonetic spelling of the Irish name Kayley or Ceilidh. It derives from the Gaelic word for a social gathering or 'slender and fair'.
Less common today
Keyleigh isn't in the latest US Top 1000. It last peaked at #5,723 in 2010.
US births per 5-year period, 1990βpresent (SSA data).