Caetlin is of Irish origin, derived from the ancient personal name 'Caitlín', which is a diminutive form of 'Caoilfhionn'. This name has been popular in Ireland for centuries and means 'pure, chaste' in Gaelic. Caetlin is composed of two elements: 'cait', meaning pure or fair, and 'lin', a diminutive suffix. It was traditionally associated with Saint Caillin, an early Irish saint whose feast day is celebrated on November 17th. The name has also been used as a given name in Scotland and Wales, contributing to its cultural diversity.
"Caetlin saw a peak in popularity with eight babies named in the year 2001."