Efflamm was a semi-legendary penitent and missionary who lived during the late fifth or early sixth century. Born in Ireland, he is said to have traveled to Brittany, where he worked alongside several disciples. Various traditions describe him as the son of an Irish king who took a vow of chastity, or as a man who lived a consecrated life in a forest hermitage with his wife, Enora. He is remembered for his spiritual influence in the Trégor region and is commemorated as a saint in both Catholic and Orthodox traditions.