"Treaty of Lisbon" (1701). Treaty of mutual alliance between Philip V of Spain and Pedro II of Portugal, by virtue of which the Portuguese monarch was obliged to guarantee the will of King Charles II concerning the succession to the Spanish throne. King Pedro II guaranteed support for Philip V and not for the pretender Charles of Austria. Signed in Lisbon on 18 June 1701 and ratified in Madrid on 1 July of that year. Collection of the Treaties of Peace, Alliance, Commerce adjusted by the Crown of Spain with the Foreign Powers (Coleccion de los Tratados de Paz, Alianza, Comercio ajustados por la Corona de Espana con las Potencias Extranjeras). Volume I. Madrid, 1796. Historical Military Library of Barcelona, Catalonia, Spain.