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Peter III
Portrait of Infante Pedro (future King Pedro III) - Attributed to Vieira Lusitano - Google Cultural Institute (cropped).jpg
Portrait by Vieira Lusitano, c. 1760–70.
King of Portugal (jure uxoris)
Reign 24 February 1777 – 25 May 1786
Predecessor Joseph I
Successor Maria I
Co-monarch Maria I
Born (1717-07-05)5 July 1717
Lisbon, Portugal
Died 25 May 1786(1786-05-25) (aged 68)
Queluz, Portugal
Burial Pantheon of the Braganzas
Spouse Maria I of Portugal
(m. 1760)
Issue
Detail
  • Joseph, Prince of Brazil
  • John VI, King of Portugal
  • Infanta Mariana Victoria
House Braganza
Father John V of Portugal
Mother Maria Anna of Austria
Religion Roman Catholicism

Dom Peter III (born 5 July 1717 – died 25 May 1786), also known as the Builder, was the King of Portugal. He ruled from 1777 until his death in 1786. Peter became king because he was married to his wife and niece, Queen Maria I. They ruled Portugal together.

Early Life of Peter III

Portrait of the Infante Pedro (1745)
Infante Peter as a young man, 1745.

Peter was born on 5 July 1717 in Lisbon, Portugal. His parents were King John V of Portugal and Queen Maria Anna of Austria. Peter was the younger brother of Joseph I of Portugal, who would later become king.

Peter's Time as King

Peter married his niece, Maria, in 1760. At that time, Maria was the next in line to the throne. When Maria became queen, Peter became king alongside her. This was because they had already had their first child. They had six children together. Their oldest son who lived, John VI of Portugal, later became king after Maria.

Peter did not get involved much in running the government. He preferred to spend his time hunting or doing religious activities. He also supported the important noble families of Portugal. He helped those who were accused in the Távora affair, a big scandal at the time. He wanted their good names cleared and their properties returned.

Peter III was somewhat friendly towards the Jesuits. The Jesuits were a religious group who had been forced to leave Portugal in 1759. Peter had been taught by Jesuits when he was younger, which explains his feelings. However, his support did not change much. The Pope ordered the Jesuits to be removed from all of Europe in 1773.

Marriage and Children

Peter and Maria were married on 6 June 1760. Maria was 25 years old and Peter was 42. Even with the age difference, they had a happy marriage. Peter became co-monarch (King Peter III) when Maria became queen, as they already had a child. The couple had six children together.

Royal styles of
King Pedro III of Portugal
Coat of Arms of the Kingdom of Portugal (1640-1910).png
Reference style His Most Faithful Majesty
Spoken style Your Most Faithful Majesty
Alternative style Sire
4 escudos en or à l'effigie de Marie I et Pierre III, 1785
A coin showing Maria I and Peter III, 1785.
Name Born Died Notes
José, Prince of Brazil 20 August 1761 11 September 1788 He married Infanta Benedita of Portugal but they had no children. His death meant his younger brother became the next in line to the throne.
João Francisco de Bragança 16 September 1763 10 October 1763 He was born at the Ajuda National Palace. He died when he was a baby.
João VI 13 May 1767 10 March 1826 He married Carlota Joaquina of Spain and they had children. He later became King of Portugal and Emperor of Brazil.
Mariana Victoria de Bragança 15 December 1768 2 November 1788 She married Infante Gabriel of Spain and they had children.
Maria Clementina de Bragança 9 June 1774 27 June 1776 She was born at the Queluz National Palace. She died when she was a toddler.
Maria Isabel de Bragança 12 December 1776 14 January 1777 She was born at the Queluz National Palace. She died when she was a baby.
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