Infanta Maria Teresa of Braganza
Princess of Beira Infanta Pedro Carlos of Spain and Portugal Countess of Molina
Born	(1793-04-29)29 April 1793 Ajuda, Lisbon, Kingdom of Portugal
Died	17 January 1874(1874-01-17) (aged 80) Trieste, Austria-Hungary
Burial	Trieste Cathedral
Spouse	Infante Pedro Carlos of Spain and Portugal ​ ​ (m. 1810; died 1812)​ Infante Carlos, Count of Molina ​ ​ (m. 1838; died 1855)​
Issue	Infante Sebastião of Spain and Portugal
Names Maria Teresa Francisca de Assis Antónia Carlota Joana Josefa Xavier de Paula Micaela Rafaela Isabel Gonzaga
House	Braganza
Father	John VI of Portugal
Mother	Carlota Joaquina of Spain

Infanta Maria Teresa of Braganza (Portuguese pronunciation: [mɐˈɾiɐ tɨˈɾezɐ] or [ˈtɾezɐ]; 29 April 1793 – 17 January 1874) was the firstborn child of John VI of Portugal and Carlota Joaquina of Spain. From 1828 to 1834, she was heiress presumptive to the Portuguese throne.

Maria Teresa Francisca de Assis Antónia Carlota Joana Josefa Xavier de Paula Micaela Rafaela Isabel Gonzaga was born in Ajuda, Lisbon, in 1793 during the reign of her grandmother Queen Maria I. Maria Teresa was the eldest child of the Prince and Princess of Brazil (later King John VI and Carlota Joaquina). Her mother was the daughter of Charles IV of Spain. As the eldest child of the heir apparent, Maria Teresa was granted the title Princess of Beira, which she held until her brother Francisco António was born in 1795.

She was married on 13 May 1810 in Rio de Janeiro (where the royal family was exiled because of the Napoleonic wars) to her cousin Infante Pedro Carlos, Prince of Spain and Portugal. She was widowed on 26 May 1812, soon after giving birth to her only child, a son, Infante Sebastian of Portugal and Spain (1811–1875).

Very conservative, she was an ally of her younger brother Miguel I of Portugal in his attempts to obtain the throne of Portugal (civil war 1826–1834), and of her brother-in-law and uncle Infante Don Carlos, Count of Molina in his attempts to obtain the Spanish throne. Following Miguels accession in 1828, Maria Teresa became heiress presumptive to her then childless brother, and would remain so until his deposition in 1834. In the last years of the reign of her uncle Ferdinand VII of Spain (died 1833), Teresa lived in Madrid and plotted to strengthen Don Carlos' position in succession. She participated in the First Carlist War (1833–1839), being a leading supporter of Carlism, church and reactionary interests. Her sister Francisca, Titular Queen of Spain, wife of Carlos, died in 1834.

On 15 January 1837, the Cortes of Spain legislated her excluded from the Spanish succession, rights belonging to her in descent from her mother, on grounds of her being a rebel along with Don Carlos. Her son Sebastian's rights were similarly excluded, but he was later, in 1859, restored in Spain. Also don Carlos' sons and Teresa's brother Miguel I of Portugal were excluded at the same law.

The next year she married again, in 1838, to her brother-in-law, uncle and longtime ally, Infante Carlos of Spain (1788–1855), whom she viewed as the rightful king of Spain; the widower of her sister Maria Francisca. The second marriage remained childless, but she took care of her stepsons, who were also her nephews and cousins. Following her marriage, her claim as the Miguelist heir passed to her only son by her first marriage, Infante Sebastião.

They soon left Spain because of unsuccess in the civil war, and never returned. She died in Trieste on 17 January 1874, having survived her second husband by nineteen years.

• Dame Grand Cross of the Order of the Immaculate Conception of Vila Viçosa^[1]
• Dame of the Order of Queen Saint Isabel^[1]
• Dame of the Order of Queen Maria Luisa^[1]

• La Princesa de Beira y los Hijos de Don Carlos by Conde de Rodezno (1938)

v t e House of Braganza
Members of the Ducal House Generations indicate descent from Afonso, Duke of Braganza, founder of the House of Braganza, until João II, Duke of Braganza, the first Braganza monarch of Portugal; italics indicate a head of the House 1st generation Afonso, 1st Marquis of Valença Isabel, Lady of Reguengos de Monsaraz Fernando I 2nd generation Ferdinand II João, 1st Marquis of Montemor-o-Novo Afonso, Count of Faro do Alentejo Álvaro, 4th Lord of Cadaval António Isabel Beatriz, Marquise of Vila Real Guiomar, Countess of Viana do Alentejo Catarina 3rd generation Roderigo, 1st Marquis of Ferreira Jorge Alberto, 1st Count of Gelves Beatriz, Duchess of Coimbra Joana, Countess of Vimioso Maria, Countess of Portalegre Filipe Jaime I Dinis, Count of Lemos Margarida 4th generation Fernando, 7th Count of Lemos Afonso Isabel Maria Isabel, Duchess of Guimarães Teodósio I Joana, Marquise of Elche Jaime Eugénia, Marquise of Ferreira Maria Constantino, Viceroy of India Fulgêncio Teotónio, Archbishop of Évora 5th generation John I Jaime Isabel, Duchess of Caminha 6th generation Maria Serefina Teodósio II Duarte, 1st Marquise of Frechilla Alexandre, Archbishop of Évora Querubina Angélica Maria Isabel Filipe 7th generation John II Duarte, 1st Lord of Vila do Conde Catarina Alexandre
Members of the Royal House Generations indicate descent from John IV, King of Portugal, formerly John II, Duke of Braganza, the first Braganza monarch of Portugal, until Manuel II, King of Portugal, the last monarch of Portugal, excluding the Miguelist line; italics indicate a head of the House 1st generation Teodósio, Prince of Brazil Ana Joana, Princess of Beira Catarina, Queen Consort of the England Manuel Afonso VI Peter II Maria 2nd generation Isabel Luísa, Princess of Beira João, Prince of Brazil John V Francisco, Duke of Beja António Francisca Xaviera Teresa Maria Manuel, Count of Ourém Francisca Josefa Luísa, Duchess of Cadaval Miguel José, Archbishop of Braga 3rd generation António Gaspar, Archbishop of Braga José, High Inquisitor of Portugal Maria Rita of Braganza Barbara, Queen Consort of Spain Pedro, Prince of Brazil Joseph I Carlos Peter III Alexandre João da Bemposta Joana Francisca, Marquise of Cascais Pedro Henrique, 1st Duke of Lafões João Carlos, 2nd Duke of Lafões Francisca 4th generation Maria I Mariana Francisca Maria Doroteia Maria Benedita, Princess of Brazil José João, Duke of Miranda do Corvo Carlota Ana Maria, 3rd Duchess of Lafões Maria Domingas, Duchess of Cadaval 5th generation José, Prince of Brazil João Carlos João Francisco John VI Maria Ana Vitória Maria Clementina Maria Isabel 6th generation Maria Teresa, Princess of Beira Francisco António, Prince of Beira Maria Isabel, Queen Consort of Spain Pedro IV Maria Francisca, Countess of Molina Isabel Maria, Regent of Portugal Miguel I Maria da Assunção Ana de Jesus Maria, Marquise of Loulé 7th generation Maria II Miguel, Prince of Beira João Carlos, Prince of Beira Januária Maria, Princess Imperial of Brazil 8th generation Pedro V Luís I Maria João, Duke of Beja Maria Anna, Princess of Saxony Antónia, Princess of Hohenzollern Fernando Augusto, Duke of Coimbra Leopoldo Maria da Glória Eugénio 9th generation Carlos I Afonso, Duke of Porto 10th generation Luís Filipe, Prince Royal of Portugal Maria Ana Manuel II
Members of the Imperial house Generations indicate descent from Pedro I, Emperor of Brazil, also Pedro IV, King of Portugal, founder of the Empire of Brazil, until Pedro II, Emperor of Brazil, the last monarch of Brazil; italics indicates a head of the House 1st generation Maria II, Queen of Portugal Januária, Countess of Aquila Paula Francisca, Princess of Joinville Pedro II Maria Amélia 2nd generation Afonso, Prince Imperial of Brazil Isabel, Princess Imperial of Brazil Leopoldina Pedro Afonso, Prince Imperial of Brazil 3rd generation Pedro Augusto Augusto Leopoldo José Fernando Luís Gastão Luís Maria Pedro de Alcântara, Prince of Grão-Pará Antônio Gastão
Members of the Miguelist House Generations indicate descent from Miguel I, King of Portugal, founder of the Miguelist House, until Duarte Pio, Duke of Braganza, the current head of the House of Braganza; italics indicates a head of the House 1st generation Maria das Neves, Duchess of San Jaime Miguel, Duke of Braganza Maria Teresa, Archduchess of Austria Maria José, Duchess in Bavaria Aldegundes, Duchess of Guimarães Maria Ana, Grand Duchess of Luxembourg Maria Antónia, Duchess of Parma 2nd generation Miguel, Duke of Viseu Francisco José Maria Teresa, Princess of Thurn and Taxis Isabel Maria, Princess of Thurn and Taxis Maria Benedita Mafalda Maria Ana, Princess of Thurn and Taxis Maria Antónia Filipa Duarte Nuno, Duke of Braganza Maria Adelaide 3rd generation Duarte Pio, Duke of Braganza Miguel, Duke of Viseu 4th generation Afonso, Prince of Beira Maria Francisca Dinis, Duke of Porto
Titles Regnal King of Portugal and the Algarves Emperor of Brazil King of the United Kingdom of Portugal, Brazil, and the Algarves Royal Prince of Portugal Prince of Brazil Prince Royal of United Kingdom of Portugal, Brazil and the Algarves Prince Royal of Portugal and the Algarves Prince of Beira Prince Imperial of Brazil Prince of Grão-Pará Prince of Brazil Infante of Portugal Noble Duke of Braganza Duke of Guimarães Duke of Barcelos Duke of Porto Duke of Beja Duke of Viseu Duke of Coimbra Marquis of Vila Viçosa Marquis of Valença Marquis of Montemor-o-Novo Count of Guimarães Count of Barcelos Count of Arraiolos Count of Ourém Count of Neiva Count of Faro Count of Faria
Patrimony Portugal Ajuda Palace Belém Palace Buçaco Palace Carrancas Palace Castle of Vila Viçosa Ducal Palace of Vila Viçosa Mafra Palace Necessidades Palace Palace of the Counts of Barcelos Palace of the Dukes of Braganza Pena Palace Queluz Palace Ramalhão Palace Ribeira Palace Brazil Grão-Pará Palace Petrópolis Palace Quinta da Boa Vista Rio de Janeiro Palace São Cristóvão Palace Santa Cruz Estate
Cadet houses Agnatic House of Valença House of Lafões House of Cadaval Non-agnatic House of Braganza-Saxe-Coburg and Gotha House of Bourbon-Braganza House of Orléans-Braganza
Miscellaneous Topics Duchy of Braganza Dukedom of Braganza List of Dukes of Braganza Duchess of Braganza Pantheon of the House of Braganza