Enniaunus (Welsh: Einion mab Arthal) was a legendary king of the Britons as recounted by Geoffrey of Monmouth. He came to power in 293BC.Monarchie Nobelesse website, Bretons
He was the son of King Archgallo and brother of Marganus II. According to Geoffrey, he ruled poorly and harshly causing him to be deposed due to tyranny.Sacred Texts website, Histories of the Kings of Britain (Book III), by Geoffry of Monmouth, tr. by Sebastian Evans, (1904) He was replaced with his cousin, Idvallo.
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