appointed regent, a choice that pleased both the people and the fast-growing bourgeoisie. In 1443, in a gesture of reconciliation, Peter created his half-brother Afonso Duke of Braganza, and relations between the two seemed to return to normality. But, in 1445, the new duke of Braganza took offence because Isabella of Coimbra, Peter's daughter was the choice for Afonso V's wife, and not one of his granddaughters. Indifferent to the intrigues, Peter continued his regency and the country prospered under his influence. It is during this period that the first subsidies for the exploration of the Atlantic Ocean were implemented under the auspices of Peter's brother Henry the Navigator. Alleged Rebellion On 9 June 1448, Afonso V came of age and Peter returned control of the country to the king. Influenced by Afonso, the Duke of Braganza, Afonso V nullified all of Peter's edicts, including the ones that concentrated power in the figure of the king. The following year, under accusations that years later would prove false, Afonso V declared Peter a rebel. The situation became unsustainable and a civil war began. It did not last long, because Peter died on 20 May 1449 during the Battle of Alfarrobeira, near Alverca. The exact conditions of his death are debatable: some say it was in combat, while others say he was assassinated by one of his own men. With the death of Peter, Portugal fell under control of Afonso, Duke of Braganza, with a growing influence over the destiny of the country. However, Peter's regency would never be forgotten, and Peter was cited many times by his grandson King John II of Portugal as his main influence. The cruel persecution of the Braganzas by John II was perhaps the response to the conspiracies that caused the fall of one of the major princes of the Ínclita Geração. Marriage and issue In 1428 Peter married Isabella of Urgell, daughter of James II, Count of Urgell, and candidate to the throne of the Crown of Aragon at the Compromise of Caspe. The couple had the following children: Infante Peter (1429–1466), Constable of Portugal, Count of Barcelona and disputed King of Aragon. Infante John (1431–1457), married Charlotte of Lusignan, heiress of Cyprus, in 1456. He was created titular Prince of Antioch, and was possibly poisoned by his mother-in-law. Infanta Isabella (1432–1455), Queen of Portugal by marriage to Afonso V of Portugal. Mother of John