Slender or fair
A modern phonetic spelling of the Irish name Kayley or Ceilidh. It is derived from the Gaelic word 'caol', meaning slender, or associated with the traditional Gaelic social gathering known as a ceilidh.
Less common today
Cayleigh isn't in the latest US Top 1000. It last peaked at #1,443 in 2009.
US births per 5-year period, 1990βpresent (SSA data).