Pedro I of Brazil
Dom Pedro I (English:
Peter I; 12 October 1798 – 24 September 1834), nicknamed "the Liberator", was the founder and first ruler of the Empire of Brazil.
As King Dom Pedro IV, he reigned briefly over Portugal, where he also became known as "the Liberator" as well as "the Soldier King".
Born in Lisbon,
Pedro I was the fourth child of King Dom João VI of Portugal and Queen Carlota Joaquina, and thus a member of the House of Braganza.
When the country was invaded by French troops in 1807, he and his family fled to Portugal's largest and wealthiest colony, Brazil.
The outbreak of the Liberal Revolution of 1820 in Lisbon compelled
Pedro I's father to return to Portugal in April 1821, leaving him to rule Brazil as regent.
He had to deal with threats from revolutionaries and insubordination by Portuguese troops, all of which he subdued.
The Portuguese government's threat to revoke the political autonomy that Brazil had enjoyed since 1808 was met with widespread discontent in Brazil.
Pedro I chose the Brazilian side and declared Brazil's independence from Portugal on 7 September 1822.
On 12 October, he was acclaimed Brazilian emperor and by March 1824 had defeated all armies loyal to Portugal.
A few months later, Pedro I crushed the short-lived Confederation of the Equator, a failed secession attempt by provincial rebels in Brazil's northeast.
A secessionist rebellion in the southern province of Cisplatina in early 1825, and the subsequent attempt by the United Provinces of the Río de la Plata to annex it, led the Empire into the Cisplatine War.
In March 1826, Pedro I briefly became king of Portugal before abdicating in favor of his eldest daughter, Dona Maria II.
The situation worsened in 1828 when the war in the south resulted in Brazil's loss of Cisplatina.
During the same year in Lisbon, Maria II's throne was usurped by Prince Dom Miguel,
Pedro I's younger brother.
The Emperor's concurrent and scandalous sexual affair with a female courtier tarnished his reputation.
Other difficulties arose in the Brazilian parliament, where a struggle over whether the government would be chosen by the monarch or by the legislature dominated political debates from 1826 to 1831.
Unable to deal with problems in both Brazil and Portugal simultaneously, on 7 April 1831
Pedro
I abdicated in favor of his son Dom Pedro II, and sailed for Europe.
Pedro I invaded Portugal at the head of an army in July 1832.
Faced at first with what seemed a national civil war, he soon became involved in a wider conflict that enveloped the Iberian Peninsula in a struggle between proponents of liberalism and those seeking a return to absolutism.
Pedro I died of tuberculosis on 24 September 1834, just a few months after he and the liberals had emerged victorious.
He was hailed by both contemporaries and posterity as a key figure who helped spread the liberal ideals that allowed Brazil and Portugal to move from absolutist regimes to representative forms of government.
George Maximilianovich, 6th Duke of Leuchtenberg
Prince George Maximilianovich Romanowsky, 6th Duke of Leuchtenberg (29 February 1852 – 16 May 1912), also known as Prince Georgii Romanovsky or Georges de Beauharnais, was the youngest son of Maximilian de Beauharnais, 3rd Duke of Leuchtenberg and his wife, Grand Duchess Maria Nikolaevna of Russia.
Alexander Georgievich, 7th Duke of Leuchtenberg
Alexander Georgievich, 7th Duke of Leuchtenberg, also known as Prince Alexander Georgievich Romanovsky or less commonly Alexander de Beauharnais (13 November 1881 – 26 September 1942) was the only son of George Maximilianovich, 6th Duke of Leuchtenberg by his first wife Duchess Therese of Oldenburg.
He was a descendant of Paul I of Russia from both of his parents.
Sergei Georgievich, 8th Duke of Leuchtenberg
Prince Sergei Georgievich Romanowsky, 8th Duke of Leuchtenberg (4 July 1890 – 7 January 1974) was the son of Prince George Maximilianovich Romanowsky, 6th Duke of Leuchtenberg and his second wife Princess Anastasia of Montenegro.
He succeeded his half-brother Alexander Georgievich as Duke of Leuchtenberg from 1942 until his death.
Amélie of Leuchtenberg
Amélie of Leuchtenberg , (31 July 1812 – 26 January 1873) was Empress of Brazil as the wife of Pedro I of Brazil.
She was the granddaughter of Josephine de Beauharnais, Empress of the French.
Her father, Eugène de Beauharnais, was the only son of Empress Josephine and her first husband Alexandre, Viscount of Beauharnais.
He thus became a stepson of Napoleon Bonaparte when his mother married the future emperor.
The mother of Empress Amélie was Princess Augusta, daughter of Maximilian I, King of Bavaria.
Auguste, Duke of Leuchtenberg
Auguste Charles Eugène Napoléon, Duke of Leuchtenberg( 9 December 1810 – 28 March 1835) was the first prince consort of Maria II of Portugal.
Besides being the 2nd Duke of Leuchtenberg and 2nd Prince of Eichstätt, he also held the Brazilian noble title of Duke of Santa Cruz.
George III, Landgrave of Leuchtenberg
George III, Landgrave of Leuchtenberg( 13 December 1502 – 21 May 1555) was Landgrave of Leuchtenberg from 1531 to 1555.
George succeeded John IV as Landgrave.
After completing his studies, he became and advisor and treasurer to Emperor Charles V and fought in the Battle of Pavia.
His post required that he provide horses and knights to Duke Louis X of Bavaria and to the Emperor to fight the war against the Ottoman Empire.
He borrowed the knights and horses, as well as from Elector Palatine Otto Henry.
In 1546, George III and Elector Palatine Frederick III signed the Treaty of Heidelberg, which defined the boundary between Leuchtenberg and the Palatinate and the privileges of Leuchtenberg.
George's brother, Christopher of Leuchtenberg( d. 1554) commanded the cavalry in the army of Albert II Alcibiades.
Christopher and Albert took several loans from George and the latter was cited before the Reichskammergericht for breach of the peace.
He had to temporarily hand over the Lordship of Grünsfeld and compensate the victims of the looting and pillaging.
His brother Christopher died impoverished in a guest house in Regensburg.
His second brother Hans was mentally ill and lived most of his life with their sister in Wallerstein.
Countess Elisabeth of Leuchtenberg
Elisabeth of Leuchtenberg( born: March 1537- died: 6 July 1579 in Dillenburg) was the daughter of Landgrave George III, Landgrave of Leuchtenberg and Margravine Barbara of Brandenburg- Ansbach.
Elisabeth of Oettingen
Elisabeth of Oettingen also known as" Elizabeth of Leuchtenberg"( born:; died: 9 July 1406) was a member of the House of Oettingen- Wallerstein by birth.
She was a Landgravine of Leuchtenberg by marriage and a lady in waiting for Elector Palatine and King of Germany Rupert.
Eugen Maximilianovich, 5th Duke of Leuchtenberg
Eugen Maximilianovich Romanowsky, 5th Duke of Leuchtenberg, Prince Romanowsky (8 February 1847 – 31 August 1901) was a son of Maximilian de Beauharnais, 3rd Duke of Leuchtenberg and Grand Duchess Maria Nikolaevna of Russia Duke of Leuchtenberg.
He succeeded his brother Nicholas Maximilianovich as Duke of Leuchtenberg from 1891 until his death.

Question: Why did Amélie Of Leuchtenberg's husband die?
Answer: tuberculosis