John II (Portuguese: João II; [ʒuˈɐ̃w]; 3 May 1455 – 25 October 1495), called the Perfect Prince (Portuguese: o Príncipe Perfeito), was King of Portugal from 1481 until his death in 1495, and also for a brief time in 1477. He is known for reestablishing the power of the Portuguese monarchy, reinvigorating the economy of Portugal, and renewing the Portuguese exploration of Africa and Asia.
Born in Lisbon on 3 May 1455, John was the second son of Afonso V of Portugal and Isabella of Coimbra. At one month old, on 25 June 1455, he was declared legitimate heir to the crown and received an oath of allegiance from the three estates.
Isabella of Coimbra died in December 1455. John and his older sister, Joanna, were raised by a governess, Beatriz de Vilhena. Their upbringing was also influenced by their aunt, Philippa of Coimbra.
In 1468, Afonso V and Henry IV of Castile attempted to arrange a double marriage in which John would marry Henry's daughter, Joanna, and Afonso would marry Henry's half-sister and heir-presumptive, Isabella of Castile. However, Isabella refused to consent to the arrangement. Instead, John married Eleanor of Viseu, his first cousin and the eldest daughter of Ferdinand, Duke of Viseu, on 22 January 1471. John was fond of Eleanor, but did not approve of the match because of the Infanta's dynastic insignificance.
John accompanied his father in the campaigns in northern Africa and was knighted after the victory in the Conquest of Arzila in August 1471.
Participation in the War of the Castilian Succession
Following the death of Henry IV of Castile in December 1474 and the accession of his half-sister, Isabella, a faction of the nobility hostile to Isabella offered the Castilian crown to Afonso V, provided he wed Henry's daughter, Joanna. John urged his father to marry Joanna and invade Castile, but leading nobles, namely the Marquis of Vila Viçosa, opposed this conviction. Afonso sent an envoy to assess support for Joanna's cause and after receiving "favorable accounts respecting the partisans of the Infanta", he ordered war preparations to be made for the following spring.
On 12 May 1475, Afonso and John entered Castile with an army of 5,600 cavalry and 14,000 foot soldiers. Afonso V proceeded to Palencia to meet Joanna while John returned home to govern the kingdom. On May 25, Joanna and Afonso were betrothed and proclaimed sovereigns of Castile. In the same month, John's wife, Eleanor, gave birth to the couple's only child to survive infancy, Afonso.
In late 1475, Afonso, with only a fragment of his army remaining, wrote letters to John imploring him to provide reinforcements. John raised an army and left for Castile again in January 1476, appointing Eleanor regent of the kingdom.
In March 1476, at Toro, Afonso V and John and some 8,000 men faced Castilian forces of similar size led by Isabella's husband, Ferdinand of Aragon, Cardinal Mendoza and the Duke of Alba. King Afonso V was beaten by the left and center of King Ferdinand's army and fled from the battlefield. John defeated the Castilian right wing, recovered the lost Portuguese Royal standard, and held the field, but overall the battle was indecisive. Despite its uncertain outcome, the Battle of Toro represented a great political victory for Isabella and Ferdinand and Afonso's prospects for obtaining the Castilian crown were severely damaged. John promptly returned to Portugal to disband the remnants of his army, arriving the first week of April.
Months after the Battle of Toro, in August 1476, Afonso V travelled to France hoping to obtain the assistance of King Louis XI in his fight against Castile. In September 1477, disheartened that his efforts to secure support had proved fruitless, Afonso abdicated the throne and embarked on a pilgrimage to Jerusalem. He was eventually persuaded to return to Portugal, where he arrived in November 1477. John had been proclaimed king days prior to Afonso's arrival, but relinquished his new title and insisted that his father reassume the crown.
From 1477 to 1481, John and Afonso V were "practically corulers." John, given control of overseas policy in 1474 and concerned with consolidating Portuguese control of Africa, played a major role in negotiating the Treaty of Alcáçovas (1479) with Spain that concluded the War of the Castilian Succession and ensured Portugal hegemony in the Atlantic south of the Canary Islands. The treaty also arranged for the marriage of John's son, Afonso, to the eldest daughter of the Catholic Monarchs, Isabella.
Following his father's death on 28 August 1481, John was proclaimed King of Portugal and crowned at Sintra on 31 August.
After his official accession to the throne, John strived to diminish the power and influence of the nobility that had greatly accumulated during his father's reign. In 1481, he assembled the Cortes in Evora and held a grand oath-taking ceremony in which magnates and other subjects were required to swear allegiance to him as their unequivocal superior. The ceremony was perceived as humiliating by members of the upper nobility who were accustomed to the feudal tradition of acknowledging the king as simply first among equals. At the Cortes, John further enraged nobles by declaring that property title deeds would undergo examination to ensure their validity, as opposed to being confirmed in mass. After representatives of commoners voiced grievances concerning abuses committed by the nobility and clergy, he deprived nobles of their right to administer justice on their estates, instead authorizing crown officials or corregedors to inspect and dispense justice throughout the realm.
Such aggressive assertions of royal supremacy roused resentment amongst the nobility. By 1482, Fernando, Duke of Braganza, the wealthiest nobleman in Portugal, and his followers had begun conspiring for John's deposition, allegedly receiving support from the Catholic Monarchs. John responded by having Fernando arrested, tried and convicted of twenty-two counts of treason, and publicly beheaded in June 1483. Afterwards, the assets of the House of Braganza were confiscated and the family fled to Castile.
Braganza's execution caused even more intrigue among the upper-nobility, who rallied behind Diogo, Duke of Viseu, John's cousin and brother to his Queen Consort, Eleanor. In September 1484, John summoned Diogo to his private chambers, confronted him with evidence of treason, and stabbed him to death. Other ringleaders involved in the plot were persecuted. Ultimately, John succeeded in enriching the Crown by executing or exiling most of Portugal's feudal lords and confiscating their estates. For the rest of his reign, he kept the creation of titles to a bare minimum.
Under John's direction, commercial activity in Africa became a crown monopoly. The immense profits generated by African ventures enabled the king to fund exploration expeditions, reduce his reliance on the cortes for financial support, and strengthen the monarchy's power over the nobility. In 1484, John began minting gold Justo coins that depicted him seated on a throne, facing forward in full armor and holding a sword.
John established a new court called the Mesa or Tribunal do Desembargo do Paço to supervise petitions for pardon, privileges, freedoms, and legislation. He also instituted annual elections for the judges, clerks, and hospital stewards under federal jurisdiction. His attempts to centralize hospitals across Portugal were not implemented fully but paved the way for the radical reforms introduced during the reign of Manuel I.