E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Now called Fuenterrabia (in Latin, Fons rapidus), near the Gulf of Gascony. Here, according to Mariana and other Spanish historians, Charlemagne and all his chivalry fell by the sword of the Spanish Saracens. Mezeray and the French writers say that, the rear of the kings army being cut to pieces, Charlemagne returned and revenged their death by a complete victory.