Caitlin

Caitlin is an Irish form of Cateline, itself an Old French version of Katherine, which derives from the Greek name Aikaterine. The ultimate root of Aikaterine is debated, but it is often associated with the Greek word katharos, meaning pure. The name was brought to Ireland through Norman French influence in the medieval period and became thoroughly naturalized as Caitlín in the Irish language. Anglicized spellings include Katelyn and Kaitlyn, while Katherine and Catherine remain the broader international cognates.