Slender or pure
As a variant of the Irish surname O'Caollaidhe, it means 'slender'. It is also frequently associated as a phonetic variant of Kaylee, which combines Kay (pure) and Lee (meadow).
About 7 girls were named Cayley in 2025.
US births per 5-year period, 1990–present (SSA data).
Prolific British mathematician who helped found the modern school of pure mathematics
