Afonso III of Portugal
Afonso III ruled Portugal from 1248 to 1279, completed the reconquest of the Algarve, and was the first Portuguese king to summon commoners to the cortes. Born in 1210, the second son of Afonso II, he had no expectation of the throne and went to France, where he married Matilda, Countess of Boulogne, and lived at the court of Louis IX. His elder brother Sancho II quarrelled with the church and the nobility, and in 1245 Pope Innocent IV declared him unfit to rule and authorised his replacement. Afonso returned, swore to uphold the rights of the church and the towns, and took power; Sancho died in exile in Toledo in 1248. He completed the conquest of the Algarve by taking Faro in 1249, which fixed Portugal's mainland borders essentially as they remain — among the oldest continuous frontiers in Europe. That provoked a long dispute with Castile over sovereignty there, settled by treaty in 1267 at the Guadiana. He moved the capital from Coimbra to Lisbon, reflecting the country's southward extension and the importance of Atlantic trade. At Leiria in 1254 he summoned representatives of the concelhos, the municipalities, to the cortes alongside the nobility and clergy — one of the earliest such assemblies in Europe. He needed their consent for taxation and their support against the magnates, and the alliance with the towns became a durable feature of Portuguese government. He repudiated Matilda to marry Beatrice of Castile, and was excommunicated for bigamy until the first marriage's end resolved it. His later conflicts with the bishops over jurisdiction brought a further interdict. He died in 1279.
- Lived: 1210 CE – 1279 CE
- Nationality: Portuguese
- Roles: king, head_of_state
