The death of Afonso VI in 1683 at the Sintra National Palace marked the conclusion of a reign defined by political instability and dynastic shifts. Born at the Ribeira Palace in 1643, this sovereign of the House of Braganza ascended to the throne in 1656, inheriting a kingdom embroiled in conflict and internal power struggles.
Early Life and Regency
As the second son of King John IV and Queen Luisa de Guzmán, Afonso experienced a childhood shaped by physical illness and political transition. At three years old, he suffered from a condition that resulted in paralysis on the right side of his body and reportedly impacted his intellectual development. Following the 1653 death of his elder brother, Teodósio, Prince of Brazil, Afonso became the heir apparent. Upon his father's death in 1656, he succeeded to the throne at age thirteen. His mother, Luisa, assumed the role of regent, continuing to govern even after the monarch reached the age of majority due to concerns regarding his competency.
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In 1662, the young king disrupted his mother's regency by removing her from power with the assistance of his favorite, Luís de Vasconcelos e Sousa, the 3rd Count of Castelo Melhor. Appointed as private secretary, Castelo Melhor oversaw significant military successes against Spain. Victories at Elvas in 1659, Ameixial in 1663, and Montes Claros in 1665 secured the independence of the House of Braganza, culminating in the 1668 Treaty of Lisbon. During this period, the administration also ceded Bombay and Tangier to England in 1661 as a dowry for the king's sister, Infanta Catherine of Braganza, and lost control of Jaffna in Ceylon to the Dutch.
Marriage and Abdication
The king's marriage to Marie Françoise of Nemours occurred in 1666. The union proved brief, as the king's brother, Pedro, orchestrated a political takeover in 1667. Declared incapable of governing, Afonso was effectively sidelined while Pedro assumed the role of prince regent in 1668. Marie Françoise subsequently obtained an annulment based on claims of the king's impotence and married Pedro. While Afonso remained nominally the sovereign, he spent his remaining years in confinement, initially on the island of Terceira and later at Sintra.
Fast facts
- Born: 1643, Ribeira Palace
- Died: 1683, Sintra National Palace
- House: Braganza
- Reign: 1656-1683
- Titles: Monarch of Portugal, 10th Duke of Braganza, 2nd Prince of Brazil
- Religion: Catholicism
- Burial site: Pantheon of the House of Braganza
Questions readers ask
Was Afonso VI capable of ruling?
Contemporary assessments identified him as mentally unfit and disruptive, leading to his mother's initial regency and his eventual displacement by his brother, Pedro.
Did the king have any children?
While the annulment of his marriage was based on claims of impotence, some historians have suggested he may have fathered illegitimate children with two nuns, Feliciana de Milão and Catarina Arrais de Mendonça.
Achievements
- Worked as sovereign
