Ildefonso Ramos Mexía

Ildefonso Ramos Mexía y Ross (2 August 1769 – 24 June 1854) was an Argentine jurist, military officer and politician. He served as governor of Buenos Aires Province between 2 May and 20 June 1820, during the period known as the Anarquía del Año XX."Listado de lugares y autoridades para elementos "Lugares" y "Contexto general"" (PDF). Argentina.gob.ar (in Spanish). Ministerio del Interior (AGN). Retrieved 10 November 2025. His brief administration ended with his resignation on 20 June; the Cabildo of Buenos Aires acted interinamente until the assumption of Miguel Estanislao Soler on 23 June."Listado de lugares y autoridades..." (PDF). Argentina.gob.ar (in Spanish). Ministerio del Interior (AGN). Retrieved 10 November 2025.

Ramos Mexía took part in the political and military life of Buenos Aires in the 1810s. Following the defeat of the central government at Cepeda and the dissolution of the Directorio, the provincial Junta de Representantes appointed him governor on 2 May 1820. Contemporary broadsides preserved in library collections record his early measures in office, including communications to municipal authorities and orders relating to the Junta de Residencia."Don Ildefonso Ramos Mexía, gobernador y capitán general de esta provincia… (bando)". Internet Archive. Provincia de Buenos Aires (impreso, 1820). Retrieved 10 November 2025."Pacto celebrado en la Capilla del Pilar… (documentos relativos a compromisos secretos)" (PDF). Biblioteca Digital – Gobierno de la Ciudad de Buenos Aires (in Spanish). Retrieved 10 November 2025.

Specialist literature of the Academia Nacional de la Historia situates his administration within the crisis and power reconfigurations of 1820 in Buenos Aires."Historia de la Nación Argentina, t. IX (edición digital)" (PDF). Repositorio ANH (in Spanish). Retrieved 10 November 2025.

On 2 May 1820 Ramos Mexía assumed as governor and captain general."Listado de lugares y autoridades…" (PDF). Argentina.gob.ar (in Spanish). Ministerio del Interior (AGN). Retrieved 10 November 2025. During his tenure, documents show coordination with the Junta de Representantes and the issuance of administrative orders and circulars."Don Ildefonso Ramos Mexía… (bando)". Internet Archive. Retrieved 10 November 2025. He resigned on 20 June amid military pressures in the capital; the Cabildo took over on an interim basis until the installation of Soler on 23 June."Listado de lugares y autoridades…" (PDF). Argentina.gob.ar (in Spanish). Ministerio del Interior (AGN). Retrieved 10 November 2025. Broadsides of the period reflect that transition and the deposit of the insignia of command in the Cabildo."Don Ildefonso Ramos Mexía… (bando)". Internet Archive. Retrieved 10 November 2025.

Archival indices and printed sources register Ramos Mexía among the deputies of the Congreso General Constituyente that sanctioned the 1826 constitution, representing the capital."Constitución de la República Argentina de 1826 (edición SAIJ)". SAIJ (in Spanish). Ministerio de Justicia y Derechos Humanos. Retrieved 10 November 2025. Additional contemporary pieces tied to his public correspondence and gubernatorial acts are held in the collections of the Museo Mitre and the Archivo General de la Nación."Correspondencia de hombres públicos argentinos (catálogo)". Museo Mitre (in Spanish). Retrieved 10 November 2025."Colección Carlos Casavalle, t. I (índice)" (PDF). Argentina.gob.ar (in Spanish). Archivo General de la Nación. Retrieved 10 November 2025.

Ramos Mexía died in Buenos Aires on 24 June 1854. Standard biographical works place his birth on 2 August 1769.Cutolo, Vicente Osvaldo (1968–1983). Nuevo diccionario biográfico argentino (1750–1930) (in Spanish). Vol. VI. Buenos Aires: Editorial Elche.

• Anarquía del Año XX
• Buenos Aires Province
• Junta de Representantes de Buenos Aires