St. Cadoc was a 6th-century Christian saint and the founder of several monasteries in Wales. He is often associated with the region of Gwent and is believed to have played a significant role in spreading Christianity in the area. His feast day is celebrated on January 25. The most notable site linked to St. Cadoc is the Monastery of Llancarfan, which he established. This monastery became an important center for learning and spirituality during the early medieval period. St. Cadoc is also recognized for his connections to other saints, including St. Illtud and St. David.