Judoc was a seventh-century Breton nobleman who chose a life of religious devotion over his royal inheritance. As the son of King Juthael of Brittany, he eventually abandoned his wealth and status to be ordained as a priest. Following a pilgrimage to Rome, he spent his later years living as a hermit near the mouth of the River Canche. He is remembered for his transition from royalty to a solitary spiritual life, eventually settling in the coastal area that later became known as Saint-Josse.