[6] Alfonso VIII summoned the Castilian counts Nuño Pérez de Lara, Pedro Gutiérrez, Àlvar Fáñez, Tello Pérez, Nuño Sánchez, the lord of Albarracín Pedro Ruiz de Azagra, the king of León Ferdinand II, the King of Aragon Alfonso II and the orders soldiers of Saint John, Calatrava and Alfama and laid siege to the city on 6 January 1177.

[7] Faithful to the friendship with the kingdom of Castile, Alfonso II, went to the siege of Cuenca with a group of armed peons identified with the Almogavars in aid of the Castilian monarch.

[7] Cuenca, considered impregnable, suffered a long and very tough siege (for nine months) by the combined armies of Castile and Aragon,[9] swelled by the large number of foreigners who came from the crusade that the Holy See had raised and that preached the cardinal legate Giacinto Bobone, who later became pope under the name of Celestine III.

[11] On 27 July, the besieged made an exit attacking the Christian camp with the aim of delivering a coup d'état against the king, but they only managed to kill Count Nuño Pérez de Lara.

[18] As a reward for the participation of Alfonso II in the capture of Cuenca, he and his successors were freed in perpetuity from the vassalage to Castile[19] that had its origin in the Treaty of Serón de Nágima (1158) [es].