Caswallawn

From Welshpedia

In Welsh mythology, Caswallawn son of Beli was a legendary king of Britain who fought Julius Caesar. He is the mythological counterpart of the historical Cassivellaunus.

In the Mabinogion, he seized the thone of Britain from Bran the Blessed when the latter was fighting a war in Ireland. In the Welsh Triads, his horse is named as Meinlas and his lover, whom he abducted from Caesar in Gaul, as Fflur, and he is said to have left Britain with 21,000 men in pursuit of Caesar and never returned.

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