The most eminent of these was the order of St. Jago, or St. James, of Compostella. The miraculous revelation of the body of the Apostle, after the lapse of eight centuries from the date of his interment, and his frequent apparition in the ranks of the Christian armies, in their desperate struggles with the infidel, had given so wide a celebrity to the obscure town of Compostella in Galicia, which contained the sainted relics, [36] that it became the resort of pilgrims from every part of Christendom, during the Middle Ages; and the escalop shell, the device of St. James, was adopted as the universal badge of the palmer. Inns for the refreshment and security of the pious itinerants were scattered along the whole line of the route from France; but, as they were exposed to perpetual annoyance from the predatory incursions of the Arabs, a number of knights and gentlemen associated themselves, for their protection, with the monks of St. Lojo, or Eloy, adopting the rule of St. Augustine, and thus laid the foundation of the chivalric order of St. James, about the middle of the twelfth century. The cavaliers of the fraternity, which received its papal bull of approbation five years later, in 1175, were distinguished by a white mantle embroidered with a red cross, in fashion of a sword, with the escallop shell below the guard, in imitation of the device which glittered on the banner of their tutelar saint, when, he condescended to take part in their engagements with the Moors. The red color denoted, according to an ancient commentator, "that it was stained with the blood of the infidel." The rules of the new order imposed on its members the usual obligations of obedience, community of property, and of conjugal chastity, instead of celibacy. They were, moreover, required to relieve the poor, defend the traveler, and maintain perpetual war upon the Mussulman. [37]
The institution of the knights of Calatrava was somewhat more romantic in its origin. That town, from its situation on the frontiers of the Moorish territory of Andalusia, where it commanded the passes into Castile, became of vital importance to the latter kingdom. Its defense had accordingly been entrusted to the valiant order of the Templars, who, unable to keep their ground against the pertinacious assaults of the Moslems, abandoned it, at the expiration of eight years, as untenable. This occurred about the middle of the twelfth century; and the Castilian monarch, Sancho the Beloved, as the last resort, offered it to whatever good knights would undertake its defense.