What is "judoc"

Saint Judoc or Saint Joyce (; traditionally 600 – 668 AD) was a seventh-century Breton noble. Though he was never officially canonized, Saint Judoc is considered a saint. Judoc is believed to be the son of Saint Judicature, King of Brittany. Judoc renounced the crown to become a priest and lived as a hermit in the coastal forest near the mouth of the River Cache.