of António, Prior of Crato as
King of Portugal in
Santarém, 1581. While António was a prisoner in Morocco, his uncle
Henry, the cardinal archbishop of Évora and only surviving brother of King
John III of Portugal (1521–1557), was proclaimed the new monarch. The cardinal was the last legitimate Portuguese male representative of the royal line, he was old and, as a Cardinal and Bishop of the Roman Catholic Church, unable to have legitimate children. Consequently, the succession became the one overwhelming issue of this short reign. According to the Portuguese cognatic custom of primogeniture, where males are given precedence, the oldest living male child of the king is proclaimed the legitimate successor. On the death of King Sebastião in Morocco, the line of King John III, eldest son of King Manuel I, was extinguished. Manuel's next son, the Duke of Beja, had had only António as a son, due to whose illegitimacy the throne had passed to Manuel's third son, Henry. Manuel had had three more children with issue - the Duke of Guimarães, who had two surviving daughters married, respectively, to the Duke of Braganza and the Duke of Parma; the Infanta Isabella, married to
Charles V, mother of Philip II; and, the
Infanta Beatrix, married to the Duke of Savoy. The succession was
contested by a number of claimants, only three of whom are of note. Philip II of Spain had the strongest claim, both as the eldest grandson of King Manuel I by his eldest daughter,
Isabella, and through his deceased wife, the
Infanta Maria Manuela, eldest daughter of King John III, who had been Heir Presumptive to the Portuguese throne from her birth until 1535. His claim was also backed-up by his position of power, access to an army and a ready availability of gold. His cousin,
Catherine, Duchess of Braganza, was also a granddaughter of Manuel I, by her father the
Infante Duarte, Duke of Guimarães, and was by this time the only legitimate Portuguese member of the royal family. Although both had strong claims to the throne, neither was ideal - Philip was effectively Spanish and Catherine was a woman - although these characteristics posed no legal limitation in and of themselves. Conversely, António as a bastard son of a Portuguese Prince had no legal claim to the throne.
Cardinal Henry was torn between the two former claimants, dismissing António, albeit tending towards Philip II given the latter's assurances that Portugal would retain formal independence as well as autonomous administration of both its
European territory and its
empire. In January 1580, the
Portuguese Cortes were assembled in
Almeirim to decide the question of the succession. Unfortunately, old
Cardinal-King Henry died without having designated a successor. The regency of the kingdom was then assumed by a governing junta composed of five members, with the Cortes increasingly leaning towards Philip II, given Catherine's limited support, particularly following her uncle's death. Paradoxically, it would be her grandson, King
John IV of Portugal, who would restore full Portuguese independence from the Habsburg monarchs 60 years later. António endeavoured to prove that his father and mother were married after his birth, but no evidence of the alleged marriage was ever presented, and relied upon popular hostility to a
Spanish ruler to present himself as an alternative candidate to King Philip II. Although his claim was not supported by two of the three arms of the cortes (the nobility and the church), who supported either Catherine or, increasingly, Philip, his support was drawn instead from the lower clergy (such as
Anthony of Sienna), the peasantry, and artisans. He compared the situation to the
1383-1385 Crisis, pushing for an election of the king by the Cortes as for the
Master of Aviz (
John), illegitimate son of King
Peter I of Portugal, who claimed his rights to the throne that ended in victory in the
Battle of Aljubarrota and in the Cortes of
Coimbra in 1385. The question of illegitimacy in 1580, however, was viewed very differently from 200 years earlier, underlined by the precedent of the
Duke of Coimbra, only surviving son of
King John II. Philip ensured the success of his claim to the
Portuguese crown by threatening to use his significant military power, buying support with gold from the
Americas, and by convincing the Cortes of the future benefits to a struggling Portuguese economy from the
personal union of the two crowns, while maintaining Portugal's independence. ==King==