Conwoïon was a 9th-century Breton abbot of Benedictine origin. Born around 800 in Comblessac to a family claiming descent from Roman senators, he became a significant religious leader in Brittany. He played a crucial role in establishing the Redon Abbey in 832, serving as its inaugural abbot. Beyond his monastic leadership, he acted as an advisor to Nominoe, the first Duke of Brittany, during diplomatic interactions with Charles the Bald.