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The Sádaba castle is located in Aragón, in the Cinco Villas region, 90 kilometers north of Zaragoza, 20 kilometers from the municipality of Ejea de los Caballeros. During the minority of James I of Aragon, Arnaldo de Alascún tyrannized the residents of Sádaba and carried out raids through adjacent Navarre, for which Sancho VII "The Strong" acted militarily against him and placed Sádaba under his protection in 1215, coinciding with the reign of the powerful James I the Conqueror, benevolent towards the kingdom of Navarre due to its heavy indebtedness, both his own and by inheritance. paternal with the Navarrese monarch.

In the War of the Two Peters, he was one of those taken hostage to Charles II of Navarra during the negotiations between the two kings. Pedro IV sold the town to Francisco de Villanueva in 1384, but the neighbors bought their freedom in 1399 and Sádaba never left the Crown of Aragon again. In 1452 it again suffered Navarrese attacks, like other border towns.
