> The Christians marched on the cry of ¡Dios ayuda a Santiago! "God save St. James!". They slew more than 5000 Muslims and James became known as "Matamoros".

OK, I'm going to go out on a tangent, and put this SE topic where they discuss why "James" is the English equivalent of "Santiago", because it didn't seem reasonable.

https://spanish.stackexchange.com/questions/4588/why-is-sant...