Afonso VI of Portugal

Afonso VI (Portuguese pronunciation: [ɐˈfõsu]; 21 August 1643 – 12 September 1683), known as "the Victorious" (o Vitorioso), 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, the Luís de Vasconcelos e Sousa, 3rd Count of Castelo Melhor.

Afonso VI
Portrait in the National Coach Museum
King of Portugal
Reign6 November 1656 – 12 September 1683
Acclamation15 November 1657
PredecessorJohn IV
SuccessorPeter II
RegentsQueen Luisa (1656–1662)
Infante Peter (1668–1683)
Chief ministerCount of Castelo Melhor (1662–1667)
Born21 August 1643
Ribeira Palace, Lisbon, Portugal
Died12 September 1683 (aged 40)
Sintra Palace, Sintra, Portugal
SpouseMaria Francisca of Savoy
(m. 1666; ann 1668)
FatherJohn IV of Portugal
MotherLuisa de Guzmán
ReligionRoman Catholicism

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. However, the king was physically and mentally weak.[1] 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 lifeEdit

At the age of three, Afonso experienced an illness that left him paralysed on the left side of his body, also leaving him mentally unstable. 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.


Portrait of Infante Afonso; 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. His mental instability and paralysis, plus his lack of interest in government, left his mother as regent for six years, until 1662.[citation needed] Afonso oversaw 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 affairsEdit

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, Catherine of Braganza, who had married King Charles II of England. English mediation in 1661 saw the Netherlands acknowledge Portuguese rule of Brazil in return for uncontested control of Sri Lanka.


Afonso married Maria Francisca of Savoy, a relative of the duke of savoy in 1666, but the marriage was short-lived. Maria Francisca filed for an annulment in 1667 based on the impotence of the king. The church granted her the annulment, and she married Afonso's brother, Peter II, Duke of Beja.


King Afonso VI imprisoned in the Palace of Sintra, by Alfredo Roque Gameiro.

That same year[when?], Peter managed to gain enough support to force 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. (The proceedings which the annulment of Afonso's marriage involved formed the basis of João Mário Grilo's 1989 film, The King's Trial.) 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.[2]

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



  1. ^ Department Of State. The Office of Electronic Information, Bureau of Public Affairs. "French Alliance, French Assistance, and European diplomacy during the American Revolution, 1778-1782". Retrieved 19 July 2022.
  2. ^ Chisholm, Hugh, ed. (1911). "Alphonso s.v. Alphonso VI." . Encyclopædia Britannica. Vol. 1 (11th ed.). Cambridge University Press. p. 734.
Afonso VI of Portugal
Cadet branch of the House of Aviz
Born: 21 August 1643 Died: 12 September 1683
Regnal titles
Preceded by King of Portugal and the Algarves
Succeeded by