Teodósio, Prince of Brazil
Dom Teodósio, Prince of Brazil, Duke of Braganza (Teodósio de Bragança; 8 February 1634 – 15 May 1653) was the eldest son of John IV of Portugal and heir apparent to the Portuguese throne from 1640 until his death. In 1645, he was created Prince of Brazil and 9th Duke of Braganza.
Also recorded as Teodósio de Bragança · Theodosius of Braganza
Teodósio, Prince of Brazil

GualdimG · Derivative works of this file: Retrato do Príncipe D. Teodósio, Torre do Tombo, Lisboa 14.jpg · CC BY-SA 4.0
- Name
- Teodósio
- Born
- 8 February 1634
- Birthplace
- Ducal Palace of Vila Viçosa, Vila Viçosa, Portugal
- Died
- 15 May 1653
- Place of death
- Royal Palace of Alcântara, Alcântara, Lisbon, Portugal
- Nationality
- Kingdom of Portugal
- Occupation
- composer · astrologer
- Movements
- Baroque music
- Languages
- Portuguese
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Dom Teodósio, Prince of Brazil, Duke of Braganza (Teodósio de Bragança; 8 February 1634 – 15 May 1653) was the eldest son of John IV of Portugal and heir apparent to the Portuguese throne from 1640 until his death. In 1645, he was created Prince of Brazil and 9th Duke of Braganza.
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Authority files
wikidata · Q2574511 · wikipedia · Teodósio, Prince of Brazil
In this article
Key facts
Key facts
• Name — Teodósio • Title — Prince of Brazil, Duke of Braganza (more...) • House — House of Braganza • Father — John IV of Portugal • Mother — Luisa de Guzmán • Born — 8 February 1634 • Birthplace — Ducal Palace of Vila Viçosa, Vila Viçosa, Portugal • Died — 15 May 1653 • Place of death — Royal Palace of Alcântara, Alcântara, Lisbon, Portugal • Burial Place — Pantheon of the Braganzas
Biography
Biography
• Illustration — Portrait of the Prince of Brazil as a child. Born on 8 February 1634 in Vila Viçosa, Teodósio was the first child of John IV of Portugal and Luisa de Guzmán, then the Duke and Duchess of Braganza. Shortly after birth, he was granted the title Duke of Barcelos. In December 1640, John was proclaimed King John IV of Portugal by the Portuguese nobility, marking the end of the 60-year-old Iberian Union and establishing the House of Braganza on the Portuguese throne. A month later, on 28 January 1641, Teodósio was sworn in as heir apparent by the Portuguese Cortes. Seeking to grant a more prestigious title that would reflect the grandeur of the new dynasty, John IV created the title Prince of Brazil and bestowed it, alongside the title of Duke of Braganza, upon Teodósio in a royal decree issued 27 October 1645. In 1646, John IV attempted to secure a dynastic alliance with France by proposing Teodósio marry Louis XIII's niece, La Grande Mademoiselle. Desperate to solidify the match, John secretly proposed abdicating his throne in favor of Teodósio. Later, António Vieira suggested to fellow Jesuits that the prince marry a Spanish princess. Both schemes amounted to nothing. Teodósio received a comprehensive education aimed at preparing him for governance. He was interested in philosophy, astronomy, mathematics, and watchmaking. In addition to his native Portuguese, Teodósio mastered Greek, Latin, Italian, and Castilian. He began participating in State Council meetings in 1649. The focus on a humanist curriculum drew criticism from nobles who advocated for Teodósio's engagement in military service as befitting his role as crown prince. Against his father's wishes, Teodósio ran away from court to join an army in Alentejo at seventeen years old. After being persuaded to return, he was given the title Captain-General of Arms in January 1652.
Death
Death
Afflicted with tuberculosis in late 1652, Teodósio died on 15 May 1653. His death, deemed a "major disaster for the regime", deeply impacted his parents. His younger sister, Catherine, would remember him throughout her life and request to be buried beside him when drafting her will more than forty years later. Teodósio's brother, the medically and mentally problem-ridden Afonso, succeeded him as Prince of Brazil, Duke of Braganza and heir apparent of the kingdom.

Capa do Livro Nova Lusitânia História da Guerra Brasílica de Francisco de Brito Freire de 1675.
Francisco de Brito Freire, 1675. · Nova Lusitânia História da Guerra Brasílica. Oficina de Joam Galram. Lisboa, 1675.
Life and career
Dated record
Life and career
The full dated record · 2 entries
1634
Teodósio, Prince of Brazil born at Ducal Palace of Vila Viçosa.
1653
Teodósio, Prince of Brazil died at Alcântara.
Places
Named by the record
Places
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Ducal Palace of Vila Viçosa.
Birth place
Alcântara.
Death place
Primary material
Documents and archives
reference work
- Wikidata, structured authority record Q2574511: Teodósio, Prince of Brazil
Reputable secondary · Wikidata
- “Teodósio, Prince of Brazil”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
authority file
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The authorities additionally record the headings Teodósio de Bragança and Theodosius of Braganza. His recorded language was Portuguese. He was the child of John IV of Portugal and Luisa de Guzmán. Recorded as composer and astrologer.
Identity and origins
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