Cathie

Cathie is an English diminutive of Catherine, which traces back through Latin Catharina and Greek Aikaterine to a name of uncertain ancient origin, possibly derived from the Greek root meaning pure. The name Catherine became widely popular in medieval Europe through the veneration of Saint Catherine of Alexandria and later Saint Catherine of Siena. Cathie functions as an affectionate short form and spelling variant alongside Cathy, Kathy, and Kathi, all of which share the same lineage.