Battle of Valdevez

Battle of Valdevez
Azulejo panel depicting the Battle of Valdevez at the São Bento railway station, Porto
Date Summer of 1140 or 1141 Location Arcos de Valdevez, Portugal Result Portuguese victory
Belligerents
Kingdom of Portugal	Kingdom of León
Commanders and leaders
Afonso I of Portugal	Alfonso VII of León

The Battle of Valdevez (Portuguese: Torneio de Arcos de Valdevez) took place at Arcos de Valdevez on the banks of the river Vez between the Kingdom of León and the Kingdom of Portugal in the summer of 1140 or 1141.^[1] It is one of only two pitched battles that Alfonso VII of León is known to have fought, and the only of the two not coincident with a siege. His opponent at Valdevez was his cousin Afonso I of Portugal. An armistice signed after the battle eventually became the Treaty of Zamora (1143), and ended Portugal's first war of independence. The area of the battle became known as the Veiga or Campo da Matança, the "field of killing".