A royal family feud ignited a six-year civil war over Portugal's future.
When King John VI died in 1826, his sons Pedro and Miguel clashed over the throne. This dispute transformed into the Liberal Wars, a brutal conflict between constitutionalists and traditionalists. It pitted brother against brother, drew in international powers, and permanently reshaped the Portuguese state through radical reform and revolution.
The conflict originated from a succession crisis following the death of King John VI in 1826. Pedro, the eldest son and Emperor of Brazil, claimed the throne but abdicated in favor of his seven-year-old daughter, Maria, while attempting to implement a constitutional charter. His younger brother, Miguel, rejected this arrangement, arguing that Pedro had forfeited his rights by taking a foreign crown. Supported by the Church and traditionalist landowners, Miguel sought to restore absolute monarchy, eventually dissolving the legislature and declaring himself king in 1828.
The war was defined by a stark divide between urban liberals and the rural, conservative peasantry. While the Liberals held major cities like Lisbon and Porto, Miguel’s forces maintained control over the countryside. The conflict became internationalized, with the Liberal cause bolstered by French, British, Spanish, and Belgian soldiers. A pivotal moment occurred in 1833 when the Liberals captured Lisbon, though the fighting continued until the decisive Battle of Asseiceira in May 1834.
Following the peace declared at Evoramonte, Miguel was exiled, and the Constitutional Charter was restored. Pedro’s victory led to sweeping changes, including the confiscation of Church property and the suppression of religious houses, which strained relations with Rome for nearly eight years. Although the war officially ended in 1834, pockets of resistance persisted into the 1840s. The struggle ultimately cemented the transition from absolute rule to a constitutional system under Queen Maria II, though it left the country deeply divided.
Source: Liberal Wars
