Royal Palace of Évora
With King John II's death, in 1495, his cousin, Manuel I, Duke of Beja and Viseu, succeeded King John II as King Manuel I of Portugal. King Manuel I's personal monopoly on the spice trade allowed the King to be a great patron of the arts, constructing numerous palaces, convents, and churches throughout the country. King Manuel I took a great interest in Évora, establishing his court there on various occasions. From 1502 to 1520, King Manuel I ordered a vast series of renovations, constructions, and enlargements. During the Manueline Campaigns, as the works are collectively known as, the palace grew to one of the largest palaces in Iberia. Through architects Martim Lourenço, Álvaro Anes, and António de Lagoa the Manuline Campaign saw the construction of Couto Hall, the Wing of the Infantes, an infirmary, the Royal Gardens and Hunting Grounds, the Royal Library, and the Gallery of Dames, which is the only part of the palace to survive to present day. Alongside expansion of the palace, King Manuel I also renovated the existing parts of the palace, remodeling the Queen's Hall, the servants quarters, and the Rossio of the Palace. In 1519, King Manuel I ordered architect André Pires to turn the plain Hall of Ambassadors into a Manueline Throne Room, which would direct itself towards the Palace Rossio.
War of the Portuguese Succession
Instead, Ranuccio's mother's younger sister Catherine, Duchess of Braganza, claimed the throne, very ambitiously, but failed. Catherine, Duchess of Braganza was married to Duke John I of Braganza (descendant in male line from Afonso, 1st Duke of Braganza, an illegitimate son of John I of Portugal), who himself was grandson of the late Duke James of Braganza, also a legitimate heir of Portugal, being the son of infanta Isabella of Portugal, sister of Manuel I and daughter of infante Ferdinand, Duke of Viseu, second son of King Duarte I. The Duchess also had a son, Dom Teodósio of Braganza, who would be her royal heir and successor to the throne. The Duchess's claim was relatively strong, as it was reinforced by her husband's position as one of the legitimate heirs; thus they would both be entitled to hold the Kingship. Moreover, the Duchess was living in Portugal, not abroad, and was not underage, but 40 years old. Her weaknesses were her gender (Portugal had not had a generally recognized reigning queen) and her being the second daughter, there thus existed a genealogically senior claimant.
According to the old feudal custom, the line of succession of the Portuguese throne would have been:Both António and Philip were the grandchildren of King Manuel I of Portugal :On July 24, 1580, António proclaimed himself as King of Portugal and of the Algarves, in Santarém, which was followed by popular acclamation in several locations of the country. However, he governed in Continental Portugal for only 33 days, culminating in his defeat at the Battle of Alcântara by the Spanish armies led by Fernando Álvarez de Toledo, Duke of Alba on August 25. The Battle ended in a decisive victory for the Spanish Habsburgs, both on land and sea. Two days later, the Duke of Alba captured Lisbon.