President of Peru Martín), and "Supreme Protector" (by Andrés de Santa Cruz). The following table contains a list of the individuals who have served as President of Peru. The Protectorate of Peru existed from August 3, 1821 until September 20, 1822. The Republic of Peru was declared on July 28, 1821 but it was constituted on September 20, 1822. It existed until August 11, 1836. In 1836, the south of the country declared itself independent by creating the Republic of South Peru, while the north of the country became the Republic of North Peru. The two states confederated with the Republic of Bolivia
Third Upper Peru campaign would spread rumors in Europe that the May Revolution was over. Third Upper Peru campaign Third Alto Perú campaign (1815): The Northern Army, unofficially commanded by José Rondeau, started another campaign, but this time without the authorization of Supreme Director Álvarez Thomas. With the lack of official support, the army faced anarchy and later would lose the aid of the Provincial Army of Salta, commanded by Martín Miguel de Güemes. After being defeated in the battles of Venta y Media (October 21) and Sipe-Sipe (November 28), the northern territories were lost. They were reannexed by the Spanish Viceroyalty of Peru,