St. Cadoc is commemorated by the Orthodox Church on January 24.
He is counted in the West to be an intercessor for persons with hearing problems and deafness, as well as scrofula and glandular disorders. He was from Wales.
A monastic, he spread the faith of Christ in both Wales and Brittany (Northern France), establishing Churches in these places. In addition to the monastery at Llancarvan in Wales, he built a stone monastery in Scotland. He also lived with St. Gildas as a hermit on a small island off the coast of Brittany for a time.
The Wikipedia entry on St. Cadoc associates him with King Arthur. There is also mention of the locale in Brittany where “he is called upon to cure the deaf:”
Source of Icon: Orthodox Outlet for Dogmatic Enquiries: