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|King of Portugal and the Algarves|
|Reign||28 August 1481 – 25 October 1495[a]|
|Acclamation||31 August 1481|
3 March 1455|
Castle of São Jorge, Portugal
|Died||25 October 1495
|Burial||Monastery of Batalha|
|Spouse||Eleanor of Viseu|
|Afonso, Prince of Portugal|
|Father||Afonso V of Portugal|
|Mother||Isabella of Coimbra|
John II (Portuguese: João II, Portuguese pronunciation: [ʒuˈɐ̃w̃]; 3 March 1455 – 25 October 1495), the Perfect Prince (Portuguese: o Príncipe Perfeito), was the king of Portugal and the Algarves in 1477/1481–1495.
He is known for re-establishing the power of the Portuguese throne, reinvigorating the Portuguese economy, and renewing his country's exploration of Africa and the Orient.
Born in Lisbon, the son of King Afonso V of Portugal by his wife, Isabella of Coimbra, John II succeeded his father as ruler of Portugal in 1477, when the king retired to a monastery, but only became king in 1481, after the death of his father and predecessor.
As a prince, John II accompanied his father in the campaigns in northern Africa and was made a knight after the victory in the Conquest of Arzila in 1471. In 1473, he married Leonor of Viseu, an infanta of Portugal and his first cousin.
Even at a young age, John was not popular among the peers of the kingdom since he was immune to external influence and appeared to despise intrigue. The nobles (including particularly his half second cousin Ferdinand II, the Duke of Braganza) were afraid of his future policies as king.
After his official accession to the throne in 1481, John II took a series of measures to curtail the power of the Portuguese aristocracy and concentrate power in himself. As one of example of the measure he took, he deprived the nobles of their right to administer justice on their estates. Immediately, the nobles started to conspire. Letters of complaint and pleas to intervene were exchanged between the Duke of Braganza and Queen Isabella I of Castile.
King John took the precaution of renegotiating the "Tercerias de Moura" agreement to insure that his son Afonso was living safely back at court before he would move against Braganza, the most powerful noble in the realm (the original agreement called for Afonso to live in Moura, Portugal, with his intended Spanish bride, Isabella, Princess of Asturias, as children before their marriage). In 1483, additional correspondence was intercepted by royal spies. The House of Braganza was outlawed, their lands confiscated and the duke executed in Évora. His widow, Isabella of Viseu, John's cousin and sister-in-law, fled with her children to Castile.
In the following year, the Duke of Viseu, John's cousin and brother-in-law, was summoned to the palace and stabbed to death by the king himself for suspicion of a new conspiracy. Many other people were executed, murdered, or exiled to Castile, including the Bishop of Évora, who was poisoned in prison. Following the crackdown, no one in the country dared to defy the king and John saw no further conspiracies during his reign. A great confiscation of estates followed and enriched the crown, which now became the dominant power of the realm.
Facing a bankrupt kingdom, John II showed the initiative to solve the situation by creating a regime in which a Council of Scholars took a vital role. The king conducted a search of the population and selected members for the Council on the basis of their abilities, talents and credentials ( Meritocracy ). John's exploration policies (see below) also paid great dividends. Such was the profit coming from John II's investments in the overseas explorations and expansion that the Portuguese currency had become the soundest in Europe. The kingdom could finally collect taxes for its own use rather than to pay debts, mainly thanks to its main gold source at that time, the coast of Guinea.
John II famously restored the policies of Atlantic exploration, reviving the work of his great-uncle, Henry the Navigator. The Portuguese explorations were his main priority in government. Portuguese explorers pushed south along the known coast of Africa with the purpose of discovering the maritime route to India and breaking into the spice trade. During his reign, the following achievements were realized:
The true extent of Portuguese explorations has been the subject of academic debate. According to one theory, some navigations were kept secret for fear of competition by neighbouring Castile. The archives of this period were mainly destroyed in the fire after the 1755 Lisbon earthquake, and what was not destroyed during the earthquake was either stolen or destroyed during the Peninsular War or otherwise lost.
When Columbus returned from his first voyage early in 1493, he first stopped in Lisbon to claim his victory in front of King John II. King John II's only response to this was that under the Treaty of Alcáçovas previously signed with Spain, Columbus's discoveries lay within Portugal's sphere of influence. Before Columbus even reached Isabella I of Castile, John II had already sent a letter to them threatening to send a fleet to claim it for Portugal. Spain quickly hastened to the negotiating table, which took place in a small Spanish town named Tordesillas. A papal representative was present to act as mediator. The result of this meeting would be the famous Treaty of Tordesillas, which sought to divide all newly discovered lands in the New World between Spain and Portugal.
The division of the world, however, was not the main issue that poisoned relations between the Iberian kingdoms. Isabella I of Castile and Ferdinand II of Aragon had several daughters, but only one feeble male heir: John, Prince of Asturias. The oldest daughter, Isabella of Aragon, had been married to Afonso, Prince of Portugal, since childhood. Afonso was John II's only son and beloved by the king. If Ferdinand died without male heir, as was probable, Afonso would be the heir not only to the throne of Portugal, but also to those of Castile and Aragon. This threat to Castilian and Aragonese independence was very real, and the Catholic Monarchs tried every diplomatic trick to dissolve the wedding. Finally, in 1491, Afonso died in mysterious circumstances: a fall from a horse during a ride in the margin of the Tagus river. The influence of Isabella and Ferdinand in this accident was never proved, but the prince was an excellent rider, his Castilian valet fled, never to be seen again, and after this, Isabella, the heiress, was no longer married to Castile's enemy. John tried without success until the end of his life to legitimise Jorge, Duke of Coimbra, his illegitimate son.
The nickname the Perfect Prince is a posthumous appellation that is intended to refer to Niccolò Machiavelli's work The Prince. John II is considered to have lived his life exactly according to the writer's idea of a perfect prince. Nevertheless, he was admired as one of the greatest European monarchs of his time. Isabella I of Castile usually referred to him as El Hombre (The Man).
The Italian scholar Poliziano wrote a letter to John II that paid him a profound homage:
Indeed, Poliziano considered his achievements to be more meritorious than those of Alexander the Great or Julius Caesar. He offered to write an epic work giving an account of John II accomplishments in navigation and conquests. The king replied in a positive manner in a letter of 23 October 1491, but delayed the commission. 
|By Leonor of Viseu (2 May 1458 – 17 November 1525; married in January 1471)|
|Infante Afonso||18 May 1475||13 July 1491||Prince of Portugal. Died in a horse riding accident. Because of the premature death of the prince the throne was inherited by Manuel of Viseu, Duke of Beja, son of Ferdinand, Duke of Viseu, who reigned as Manuel I, 14th King of Portugal.|
|By Ana de Mendonça (c. 1460-?)|
|Jorge||21 August 1481||22 July 1550||Natural son known as Jorge de Lencastre, Duke of Coimbra.|
|Ancestors of John II of Portugal|
His cousin, Isabella of Castille, herself no weakling, admiringly dubbed him 'el Hombre', for all the world like some early spaghetti-western hero.
John II of Portugal
Cadet branch of the House of BurgundyBorn: 3 March 1455 Died: 25 October 1495
|King of Portugal and the Algarves
|King of Portugal and the Algarves
|Prince of Portugal
|Prince of Portugal