 It is a sign of his fame that he was referred to as "Petro Galliciensi comite" ("Pedro, Galician count") in a letter from William IX, Duke of Aquitaine, to Diego Gelmírez on the occasion of his pilgrimage to Santiago.“Galicia, behind its mountain shield, had become almost a third power rather than a province, ruled in uneasy alliance by the bishop of Compostela and Count Pedro Fróilaz.