 It would later form the core of the 11th century Kingdom of Aragon.Originally intended to protect the central Pyrenean passes from the Moors in the same way that the Duchy of Vasconia and the Marca Hispanica were to protect the west and east, Aragon remained largely out of the reach of its nominal Carolingian lords, though it was an expressly Frankish creation and not an ethnically distinct region.The earliest attested local ruler was Oriol (807), probably Frankish, Visigothic or Hispano-Roman.