The Treaty of Elvas (Portuguese: tratado de Elvas) was a peace treaty between the Kingdom of Portugal and Crown of Castile, which ended the Portuguese-Castilian War of 1381-1382. It was signed by King Fernando I of Portugal and King John I of Castile on 10 August 1382 in the Portuguese city of Elvas after the Portuguese defeat. The terms of the treaty were as follows:
The treaty was negotiated by the Portuguese queen Leonor Teles, Count of Ourém, the Galician Juan de Andeiro,[3] Bishop of Lisbon, the Castilian Martinho de Zamora,[3] Bishop of Coimbra, the Castilian Juan Cabeza de Vaca,[3] Bishop of Guarda, the Portuguese Afonso Correa,[3] lawyer João das Regras and others.[1] Pedro de Luna (future antipope Benedict XIII), an envoy of Avignon antipope Clement VII, served as mediator between the Portuguese and Castilian parties.[1]
The Treaty of Elvas was a separate peace treaty concluded behind the backs of Portugal's English allies.[1] It removed Portugal from the Hundred Years' War for a time. As a chronicler recalls, learning of the betrayal of the Portuguese, the English knights angrily put down their helmets and smashed them with axes.[1] On 1 September 1382 Edmund, earl of Cambridge, took his ships and left Lisbon with his army.[1]
On 2 April 1383 the Treaty was supplemented and clarified in the Treaty of Salvaterra, according to which Beatrice had to marry John I of Castile.