WThe Treaty of Alcáçovas was signed on 4 September 1479 between the Catholic Monarchs of Castile and Aragon on one side and Afonso V and his son, Prince John of Portugal, on the other side. It put an end to the War of the Castilian Succession, which ended with a victory of the Castilians on land and a Portuguese victory on the sea. The four peace treaties signed at Alcáçovas reflected that outcome: Isabella was recognized as Queen of Castile while Portugal reached hegemony in the Atlantic Ocean.
WThe Treaty of Granada was signed and ratified on November 25, 1491, between Boabdil, the sultan of Granada, and Ferdinand and Isabella, the King and Queen of Castile, León, Aragon and Sicily. It ended the Granada War which had started in 1482, culminating in the siege and battle of Granada beginning in spring 1491.
WThe Treaty of Alcañices was made in Alcañices between King Denis of Portugal and King Fernando IV of Castile in 1297.
WThe Treaty of Almizra was the third of a series of three treaties between the Crown of Aragon and Crown of Castile meant to determine the limits of their expansion into Andalusia so as to prevent squabbling between the Christian princes. Specifically, it defined the borders of the Kingdom of Valencia. James I of Aragon signed it on 26 March 1244, but Alfonso X of Castile did not affirm it until much later. According to the treaty, all lands south of a line from Biar to Villajoyosa through Busot were reserved for Castile.
WThe Fernandine Wars were a series of three conflicts between the Kingdom of Portugal under King Ferdinand I and the Crown of Castile under King Henry II. They were fought over Ferdinand's claim to the Castilian succession after the death of King Peter of Castile in 1369.
WThe Treaty of the Bulls of Guisando is the name of a treaty agreed on top of the hill of Guisando near the Bulls of Guisando on 19 September 1468, between Henry IV of Castile and his half-sister Isabella of Castile. In this treaty Isabella was granted the title of Princess of Asturias and therefore became heiress presumptive to the Crown of Castile.
WThe Treaty of Villafáfila is a treaty signed by Ferdinand the Catholic in Villafáfila on 27 June 1506 and by Philip the Handsome in Benavente, Zamora, on 28 June.