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 king's army being cut to pieces, Charlemagne returned and revenged their death by a complete victory.
When Charlemagne with all his peerage fell By Fontarabia.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894