E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A fabulous king of Gaul, father of Amadis of Gaul. His encounter with the lion is one of his best exploits. It is said that he was hunting, when his horse reared and snorted at seeing a lion in the path. Perion leaped to the ground and attacked the lion, but the lion overthrew him; whereupon the king drove his sword into the belly of the beast and killed him. (Amadis de Gaul, chap. i.)