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Afonso VI of Portugal

1643 – 1683

King of Portugal and the Algarves

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About Afonso VI of Portugal

Lived 1643 – 1683 (aged 40). Afonso VI of Portugal was a sovereign.

Dom Afonso VI (; 21 August 164312 September 1683), known as "the Victorious" , was the second king of Portugal of the House of Braganza from 1656 until his death. He was initially under the regency of his mother, Luisa de Guzmán, until 1662, when he removed her to a convent and took power with the help of his favourite, D. Luís de Vasconcelos e Sousa, 3rd Count of Castelo Melhor.

Afonso's reign saw the end of the Restoration War (1640–68) and Spain's recognition of Portugal's independence. He also negotiated a French alliance through his marriage. In 1668, his brother Pedro II conspired to have him declared incapable of ruling, and took supreme de facto power as regent, although nominally Afonso was still sovereign. Queen Maria Francisca, Afonso's wife, received an annulment and subsequently married Pedro. Afonso spent the rest of his life and reign practically a prisoner.

Early life Afonso was the second of three sons born to King John IV and Queen Luisa. At the age of three, he experienced an illness that resulted in paralysis on the right side of his body. The condition was believed to have also affected his intellectual abilities. His father created him 10th Duke of Braganza.

After the death of his eldest brother Teodósio, Prince of Brazil in 1653, Afonso became the heir apparent to the throne of the kingdom. He also received the crown-princely title 2nd Prince of Brazil.

Reign Portrait of Infante D. Afonso with a Black page, by José de Avelar Rebelo, 1653 He succeeded his father, John IV, in 1656 at the age of thirteen. His mother, Luisa de Guzmán, was named regent in his father's will. She subsequently retired to a convent, where she died in 1666.

Afonso appointed Castelo Melhor as his private secretary (escrivão da puridade). He proved to be a competent minister. His astute military organization and sensible general appointments resulted in decisive military victories over the Spanish at Elvas (14 January 1659), Ameixial (8 June 1663) and Montes Claros (17 June 1665), culminating in the final Spanish recognition of sovereignty of Portugal's new ruling dynasty, the House of Braganza, on 13 February 1668 in the Treaty of Lisbon.

Colonial affairs Colonial affairs saw the Dutch conquest of Jaffna, Portugal's last colony in Portuguese Ceylon (1658), and the cession of Bombay and Tangier to England (23 June 1661) as dowry for Afonso's sister, Infanta Catherine of Braganza, who had married King Charles II of England.

Marriage Melhor arranged Afonso's marriage to Marie Françoise, daughter of the duke of Nemours,, in 1666, but the marriage was short-lived. After Afonso was declared incompetent by his brother Pedro in 1667, Maria Francisca obtained an annulment, claiming Afonso was impotent. She then married Pedro.

Afonso was a prisoner for the rest of his life. In recent years, some historians have suggested that he may have begotten illegitimate children with two nuns reputed to be his lovers (Feliciana de Milão and Catarina Arrais de Mendonça). If true, this would disprove the claim of impotence. This was proposed by Feliciana's biographer, Pedro Sena-Lino , in his doctoral thesis.

Downfall

In 1667, Pedro forced Afonso to relinquish control of the government to him, and he became prince regent in 1668. While Pedro never formally usurped the throne, Afonso was king in name only for the rest of his life. For seven years after Peter's coup, Afonso was kept on the island of Terceira in the Azores. His health broken by this captivity, he was eventually permitted to return to the Portuguese mainland, but he remained powerless and kept under guard. At Sintra he died in 1683.

The room where he was imprisoned is preserved at Sintra National Palace.

Ancestry

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Important facts

Birth century
Occupation
Nationality
Kingdom of Portugal
Positions held
Monarch of Portugal, Grand Master of the Order of the Tower and Sword

Family & relationships

Spouse
Maria Francisca of Savoy
Parent
John IV of Portugal
Parent
Luisa de Guzmán

People in Afonso VI of Portugal's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Afonso VI of Portugal's

Frequently asked questions

Who was Afonso VI of Portugal?

King of Portugal and the Algarves

When was Afonso VI of Portugal born?

Afonso VI of Portugal was born on 21 August 1643 in Ribeira Palace.

When did Afonso VI of Portugal die?

Afonso VI of Portugal died on 12 September 1683 in Sintra National Palace.

What was Afonso VI of Portugal's occupation?

Afonso VI of Portugal was a sovereign.

What nationality was Afonso VI of Portugal?

Afonso VI of Portugal's recorded nationality: Kingdom of Portugal.

Sources & further reading

· Wikipedia: Afonso VI of Portugal

· Wikidata: Q691168

· DBpedia: Afonso VI of Portugal

Cite this page

APA: Biography.guide. (2026). Afonso VI of Portugal. https://biography.guide/afonso-vi-of-portugal/

MLA: "Afonso VI of Portugal." Biography.guide, https://biography.guide/afonso-vi-of-portugal/.

Chicago: "Afonso VI of Portugal." Biography.guide. https://biography.guide/afonso-vi-of-portugal/.

Data last updated: 2026-09-29 · Spot an error? Report a correction.

Portrait: Wikimedia Commons · author & licence

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