Portuguese Civil War of 1245–1247

Portuguese Civil War (1245–1247)
	; Death of King D. Sancho II, c. 19th century
Date	July 24, 1245–Late 1247
Location	Kingdom of Portugal
Result	Victory for Afonso, Count of Boulogne Exile of Sancho II to Castile; Afonso, Count of Boulogne becomes King of Portugal;
Belligerents
Pro-Sancho Portugal; Supported by:; Crown of Castile	Pro-Afonso Portugal; Supported by:; Papal States
Commanders and leaders
Sancho II #; Queen Mécia (POW); Prince Alfonso; …and others	Count of Boulogne; Innocent IV; …and others

The Portuguese Civil War (1245–1247), or the 1245 Revolution, or the Crisis of 1245, was a conflict between King Sancho II and his brother Afonso, Count of Boulogne, over the Portuguese throne. Sancho II faced opposition from the nobility and clergy due to his governance, leading Pope Innocent IV to declare him unfit to rule and appoint Afonso as regent. Afonso won the war, and Sancho was forced into exile in Castile.