1) Fictional knight 
In the Matter of France, Ganelon is the knight who betrayed Charlemagne`s army to the Muslims, leading to the Battle of Roncevaux Pass. His name is said to derive from the Italian word inganno, meaning fraud or deception, but he is actually based on the historical Wenilo, the archbishop of Sens who betrayed King Charles the Bald in 858. Ganelon`.....