Afonso III of Portugal (b. 1210)

Afonso III: The Architect of Portuguese Territorial Unity

Afonso III, often known by his distinctive moniker "the Boulonnais" (Portuguese: o Bolonhês), was a pivotal figure in Portuguese history. Born on 5 May 1210, he ascended to the throne as the fifth King of Portugal, reigning from 1248 until his death on 16 February 1279. His reign is most notably characterized by the completion of the Portuguese Reconquista and the subsequent adoption of the title "King of Portugal and the Algarve," a declaration that solidified the territorial integrity of the nascent kingdom.

Early Life and Contentious Succession

Afonso III was the second son of King Afonso II of Portugal and Urraca of Castile, making him a younger brother to King Sancho II. His early life was largely spent outside Portugal. Through his marriage to Matilda II, Countess of Boulogne, he acquired the title of Count of Boulogne, hence his epithet "the Boulonnais." This foreign experience proved crucial when internal strife plagued his brother's reign.

King Sancho II's rule was marked by significant internal conflict and a weakening of royal authority, particularly in his struggles with the Church and the nobility. This culminated in Pope Innocent IV declaring Sancho II rex inutilis (useless king) in 1245, effectively deposing him. Afonso, then Count of Boulogne, was invited by the Portuguese nobility and the Church to act as regent and defender of the kingdom, arriving in Portugal in 1246. Sancho II was forced into exile in Toledo, where he died on 4 January 1248. Following his brother's demise, Afonso officially became the undisputed King of Portugal, taking the throne with the full backing of the Cortes and the Papacy.

The Significance of "King of Portugal and the Algarve"

One of Afonso III's most enduring legacies was his role in completing the Portuguese Reconquista, the centuries-long process of expelling Moorish rule from the Iberian Peninsula. In 1249, he spearheaded the final campaigns that led to the conquest of the Algarve region from the Muslims, most notably capturing the city of Faro. This decisive victory marked the definitive end of Muslim presence in continental Portugal and established the kingdom's modern southern borders.

To commemorate this monumental achievement and reflect the expanded dominion, Afonso III was the first Portuguese monarch to formally adopt the royal style of "King of Portugal and the Algarve." This title, first used in 1249, was not merely ceremonial; it was a powerful political statement. It symbolized:

His reign, lasting over three decades, was characterized by the consolidation of royal power, the promotion of new urban centers, and the convocation of the first Cortes where representatives of the burghers were included, laying foundations for future parliamentary development.

Frequently Asked Questions about King Afonso III

When did Afonso III become King of Portugal?
Afonso III formally became King of Portugal upon the death of his brother, Sancho II, on 4 January 1248. However, he had effectively been acting as regent and 'defender of the kingdom' since 1246, following Sancho II's deposition by papal decree.
Why was Afonso III known as "the Boulonnais"?
Afonso III acquired the epithet "the Boulonnais" (Portuguese: o Bolonhês) because he held the title of Count of Boulogne in France through his first marriage to Matilda II, Countess of Boulogne, before he became King of Portugal.
What was the significance of the title "King of Portugal and the Algarve"?
The title "King of Portugal and the Algarve" was adopted by Afonso III in 1249 to signify the completion of the Portuguese Reconquista. It marked the successful conquest and incorporation of the southern Algarve region from Muslim rule into the Portuguese kingdom, establishing Portugal's modern territorial boundaries.
Who were Afonso III's parents?
Afonso III was the second son of King Afonso II of Portugal and Urraca of Castile.
How did Afonso III succeed his brother, Sancho II?
Afonso III succeeded his brother, Sancho II, under tumultuous circumstances. Sancho II's ineffective rule led Pope Innocent IV to declare him rex inutilis (useless king) in 1245. Afonso was then invited to act as regent. After Sancho II's death in exile in 1248, Afonso III officially assumed the throne, consolidating royal power and receiving the full support of the Portuguese nobility and the Church.