The month of June left several decisive episodes in the medieval history of Spain. Amidst battles, conquests, foundations, and political crises, these events help to understand how the Christian kingdoms of the Iberian Peninsula changed during the Middle Ages.
Battle of São Mamede
In the 12th century, the territory of present-day Portugal was not yet an independent kingdom; it was part of the County of Portugal, a region located in the west of the Peninsula and linked to the Kingdom of León.
It was governed by Theresa of León, daughter of the Leonese king, but part of the local nobility rejected her closeness to Galician families.
Her son, Afonso I of Portugal, led a revolt against the government of his mother, Theresa of León, and on June 24, 1128, he won the Battle of São Mamede, fought near Guimarães, beginning the process that would end with the creation of the Kingdom of Portugal.
Consolidation of the Order of Calatrava
During the Reconquista, the Crown of Castile pushed southward but needed to defend the conquered castles against al-Andalus. To this end, the Order of Calatrava, formed by warrior monks around June 21, 1150, was reinforced, consolidating itself as a stable military force serving the defense of the Castilian border to protect newly occupied territories.
Over time, the order became one of the most powerful military institutions in medieval Spain.
Ferdinand III's Entry into Cordoba
Cordoba had been the capital of the Muslim caliphate and, in the 13th century, it remained a key city of al-Andalus.
Taking advantage of Almohad weakness, Ferdinand III of Castile took the city on June 29, 1236, after a long siege, with the entry of Castilian troops into the city.
Its conquest strengthened Castile, facilitated the advance through Andalusia, and marked one of the most important milestones of the Reconquista.
Alfonso X and the Holy Roman Empire
Alfonso X of Castile was elected as a candidate for the Holy Roman Empire on June 1, 1257, when he was proclaimed King of the Romans by a faction of the Empire's prince-electors, thanks to his family ties to the German nobility.
This election gave prestige to Castile and showed its growing influence in Europe. However, the candidacy required great expenses and never culminated in his coronation as emperor.
Death of Peter III of Aragon
The death of Peter III of Aragon on June 16, 1285, closed a reign marked by wars against France and expansion in Sicily.
His passing left a Crown of Aragon strengthened in the Mediterranean by the conquests made during his reign, although it forced a reorganization of its foreign and succession policy.
Founding of Bilbao
Bilbao was founded by Diego López V de Haro to boost maritime trade in the northern peninsula on June 17, 1300, through the granting of a town charter (fuero), with the aim of organizing the settlement and promoting port activity.
Its port facilitated the export of iron and wool to Europe, and the town became one of the most important commercial centers of the Crown of Castile.
Farce of Avila
The Farce of Avila was a symbolic act in which part of the nobility staged the deposition of Henry IV of Castile.
The ceremony, which took place on June 5, 1465, when nobles gathered in Avila symbolically proclaimed the dismissal of the king and the elevation of the infant Alfonso as an alternative monarch, exacerbated the Castilian civil war and opened the succession crisis that, years later, would facilitate the rise of Isabella I of Castile.
These events show how June was a particularly relevant month in the history of medieval Spain, with facts that influenced the formation of Portugal, the expansion of Castile and Aragon, and the end of the peninsular Middle Ages.
