Slender or pure
Caeley is a modern American phonetic spelling, likely derived from the Irish surname O Caollaidhe meaning 'slender'. It is also frequently associated as a variant of Kayley or a diminutive of Catherine, which means 'pure'.
Less common today
Caeley isn't in the latest US Top 1000. It last peaked at #3,067 in 2000.
US births per 5-year period, 1990βpresent (SSA data).