Beuno was a 7th-century Welsh abbot and saint who operated within the Kingdom of Powys and northern Wales. Born into a royal lineage descending from Vortigern, he received his training at the monastery in Bangor. Following his ordination, he served as a missionary with the backing of King Cadfan. After a dispute regarding land with the king's successor, he established a significant monastic site at Clynnog Fawr, where he eventually passed away.