Kaitlyn is a modern Caitlin variant, popularized in the late 20th century. The name is an Anglicized spelling of the Irish name Caitlín, itself derived from the Old French Cateline, a form of Katherine. The rich history of Katherine traces back to the Greek name Αἰκατερίνη (Aikaterine), whose etymology is debated. It may derive from Ἑκατερινη (Hekaterine), meaning "each of the two," or be linked to the goddess Hecate. Alternatively, it could stem from the Greek αἰκία meaning "torture" or from a Coptic phrase meaning "my consecration of your name." Early Christians associated the name with the Greek καθαρός (katharos), meaning "pure," which influenced the spelling change from Katerina to Katharina. The name was borne by the 4th-century Saint Catherine of Alexandria, a martyr tortured on a spiked wheel, whose cult spread to Western Europe via Crusaders. Popularity and Variants Since the 1970s, the pronunciation of Caitlin shifted from the traditional Irish [ˈkatʲlʲiːnʲ] (similar to "Kathleen") to the English [ˈkeɪtlɪn] ("KAYT-lin"), leading to respellings such as Kaitlyn, Caitlyn, Katelyn, Kaitlin, and others. In the United States, Kaitlyn gained prominence in the late 20th century and remained a popular choice for girls into the 2000s. Its popularity mirrored the trend for creative spellings of traditional names. Related Names This variant is part of a vast family of names related to Katherine and Caitlin. Among its many variants are Caitlyn, Kaitlin, Kaitlynn, Katelin, and Katelyn. International forms include Katerina (Macedonian), Katalin (Hungarian), and Kattalin (Basque), among others. Meaning: Variant of Caitlin/Anglicized form of Katherine ⸺ associated with "pure" (Greek katharos) Origin: Irish, derived from Caitlín, Old French Cateline, ultimately Greek Aikaterine Type: Feminine given name Principal usage region: English-speaking world