Irene Asanina
Irene Asanina( died after 1354), was the Empress consort of John VI Kantakouzenos of the Byzantine Empire.
Manuel, Prince of Portugal (1531–1537)
Manuel, Prince of Portugal( 11 November 1531 – 14 April 1537), was the Prince of Portugal from 1535 to his death in 1537.
He was the fifth child son of king John III of Portugal and Catherine of Austria.
In 1535, his father officially designated him as Prince of Portugal, taking the place of his eldest sister Infanta Maria Manuela.
However, after his premature death at five years old, his younger brother Infante Filipe became the next Prince of Portugal.
Carlota Joaquina of Spain
Doña Carlota Joaquina of Spain ("Carlota Joaquina Teresa Cayetana";
25 April 1775 – 7 January 1830), was by birth a member of the Spanish branch of the House of Bourbon and Infanta of Spain and by marriage Queen consort of Portugal.
Eldest daughter of King Charles IV of Spain and Maria Luisa of Parma, she was married in May 1785 aged 10 with Infante John, Lord of the Infantado and Duke of Beja, second son of Queen Maria I of Portugal, in an attempt to cement ties between the Kingdoms of Spain and Portugal.
Detested by the Portuguese court — where she was called "the Shrew of Queluz"  — Carlota Joaquina also gradually won the antipathy of the people, who accused her of promiscuity and influencing her husband in favor of the interests of the Spanish crown.
After the escape of the Portuguese court to Brazil, Carlota Joaquina began conspiring against her husband, claiming that he had no mental capacity to govern Portugal and its possessions, thus wanting to establish a regency.
Ambitious, she also planned to usurp the Spanish crown that was in the hands of Napoleon's brother Joseph Bonaparte.
After the marriage in 1817 of her son Pedro with the Archduchess Leopoldina of Austria and the later return of the royal family to Portugal in 1821, Carlota Joaquina was confined in the Royal Palace of Queluz, where she died alone and abandoned by her children on 7 January 1830.
After her death, Carlota Joaquina (mainly in Brazil) became part of popular culture and an important historical figure, being the subject of several books, films and other media.
Some scholars believe that she has had a rough and superficial behavior, attributing to her the fact that she hated Brazil.
Domingos Sequeira
Domingos António de Sequeira( Lisbon; 10 March 1768 Rome; 8 March 1837) was a famous Portuguese painter at the Royal Court of King John VI of Portugal.
Maria Teresa, Princess of Beira
Infanta Maria Teresa of Braganza( or; 29 April 1793 – 17 January 1874) was the firstborn child of John VI of Portugal and Carlota Joaquina of Spain, and heir presumptive to the throne of Portugal between 1793 and 1795, until her short- lived brother António Pio was born.
Infanta Isabel Maria of Braganza
Infanta Isabel Maria of Braganza; Queluz, 4 July
1801 – Benfica, then Belém, 22 April 1876 was a Portuguese" infanta"( princess) daughter of King John VI of Portugal and his wife Carlota Joaquina of Spain.
She acted as regent for two years.
John VI, Count of Oldenburg
John VI, Count of Oldenburg( 1501 in Oldenburg – 1548 in Bremen) was a Count of Oldenburg.
He was the eldest son of John V, Count of Oldenburg and his wife, Anna of Anhalt- Bernburg.
He was supposed to rule jointly with his younger brothers.
However, his time in office was marked by conflicts between John VI and his co-rulers.
John VI of Portugal
John VI (Portuguese: "João VI"; 13 May 1767 – 10 March 1826), nicknamed "the Clement", was King of the United Kingdom of Portugal, Brazil and the Algarves from 1816 to 1825.
Although the United Kingdom over which he ruled ceased to exist "de facto" beginning in 1822, he remained its monarch "de jure" between 1822 and 1825.
After the recognition of the independence of Brazil under the Treaty of Rio de Janeiro of 1825, he continued as King of Portugal until his death in 1826.
Under the same treaty, he also became titular Emperor of Brazil for life, while his son, Pedro I of Brazil, was both "de facto" and "de jure" the monarch of the newly-independent country.
Born in Lisbon in 1767, the son of Maria I and Peter III of Portugal, he was originally an "infante" (prince, but not heir to the throne) of Portugal.
He only became heir to the throne when his older brother José, Prince of Brazil, died of smallpox in 1788 at the age of 27.
Before his accession to the Portuguese throne, John VI bore the titles Duke of Braganza and Duke of Beja, as well as Prince of Brazil.
From 1799, he served as prince regent of Portugal (and later, from 1815, as prince regent of the United Kingdom of Portugal, Brazil and the Algarves), due to the mental illness of his mother, Queen Maria I.
In 1816, he succeeded his mother as monarch of the Portuguese Empire, with no real change in his authority, since he already possessed absolute powers as regent.
One of the last representatives of absolute monarchy in Europe, he lived during a turbulent period; his reign never saw a lasting peace.
Throughout his period of rule, major powers, such as Spain, France and Great Britain, continually intervened in Portuguese affairs.
Forced to flee to South America across the Atlantic Ocean into Brazil when troops of the Emperor Napoleon I invaded Portugal, he found himself faced there with liberal revolts; he was compelled to return to Europe amid new conflicts.
His marriage was no less conflictual, as his wife, Carlota Joaquina of Spain, repeatedly conspired against her husband in favor of personal interests or those of her native Spain.
He lost Brazil when his son Pedro declared independence, and his other son Miguel (later Miguel
I of Portugal) led a rebellion that sought to depose him.
According to recent scholarly research, his death may well have been caused by arsenic poisoning.
Notwithstanding these tribulations he left a lasting mark, especially in Brazil, where he helped to create numerous institutions and services that laid a foundation for national autonomy, and he is considered by many historians to be a true mastermind of the modern Brazilian state.
Still, he has been widely (if unjustly) viewed as a cartoonish figure in Portuguese-Brazilian history, accused of laziness, lack of political acumen and constant indecision, and is often portrayed as physically grotesque.
Johann VI, Count of Nassau-Dillenburg
Count John VI of Nassau-Dillenburg (22 November 1536 – 8 October 1606) was the second son of William the Rich and the younger brother of William the Silent.
He has a special place in the history of the Netherlands because he is the male-line forefather of the House of Orange which ruled that country until 1898.
John VI of Nassau-Dillenburg was a Count of Nassau in Dillenburg.
Other names he had were "Jan VI" or "Jan de OudeJohn the Elder", to distinguish him from his 2nd son, "John the Middle", and his grandson "John the Younger").
John VI was born in Dillenburg, the second son of Count William I of Nassau-Dillenburg and his second wife Juliane of Stolberg-Wernigerode and brother of William I of Orange.
He was the principal author of the Union of Utrecht.
Afonso, Prince of Portugal (1526)
Afonso, Prince of Portugal was the first son of king John III of Portugal and his queen, Catherine of Austria.
He was the Prince of Portugal but died in the same year he was born, in 1526.

Question: Where did John Vi Of Portugal's wife die?