E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Twin brother of Valentine, and son of Bellisant, sister of King Pepin and wife of Alexander, Emperor of Constantinople. The twin brothers were born in a wood near Orleans, and Orson was carried off by a bear, which suckled him with her cubs. When he grew up he was the terror of France, and was called the Wild Man of the Forest. He was reclaimed by Valentine, overthrew the Green Knight, and married Fezon, the daughter of Duke Savary of Aquitaine. (French, ourson, a little bear.) (Valentine and Orson.)