Iodocus

Iodocus is a Latinized form of the Medieval Breton name Iudoc, itself derived from a Brythonic root related to the Celtic element meaning lord or chief. The name was borne by a seventh-century Breton saint, traditionally identified as a Cornish or Breton prince who renounced his throne to become a pilgrim and hermit, and whose cult spread widely through Brittany, England, and parts of continental Europe. His veneration helped carry the name into Latin ecclesiastical usage throughout the medieval period. Related forms include Judoc, Josse, and Joyce, the last of which entered use as both a given name and surname in England largely through devotion to this saint.