Pedro Martinez de Luna, Benedict XIII, Pope Luna. Three different ways of naming the same character who has gone in history, due to the firmness of his convictions against Rome, as obstinacy personified by. Few know the true dimension of who really engineered the territorial unification of Spain that would come to light with the Catholic Monarchs. An intellectual, political, religious and even warrior figure (because war, as for any other 15th century leader, would be fundamental in his pontificate). We observe in his thought and work we observe the awakening of the project that the Order of the Temple designed for the Western Christianity. Custodian of the Holy Grail, owner of an entire naval army, forerunner of the Borgias and supporter of the Trastámara, Benedict XIII starred in the exciting story of the resistance of the Avignon papacy against Rome during the Schism and made the town of Peñíscola in Castellón the center of attention of Spain and the world. His personality, his deep ideals and his strategic skills made him a fearsome threat to his adversaries (whom he watched die one by one until Martin V) and a familiar and popular name among the people. His legacy, today faded, expands along a thousand paths and depicts him, along with the chronicles, as perhaps the most determining character of the Late Middle Ages in the entire West.