Albarracín was a Señorío of Muslim origin that formed part of the Muslim Kingdom of Valencia. The Señorío was formed when a Navarese noble from the House of Azagra militarily helped the Valencian kingdom. The Señorío de Albarracín was granted to this noble who repopulated the city with people from Navarre. After the conquest of Valencia by James I of Aragon, the territory was left in a legal vacuum. The local nobility, taking advantage of the questionable legal status, declared their independence (de facto) from both Valencia and Aragon.