José Mariano Serrano was a Bolivia

Bolivia

Bolivia officially known as Plurinational State of Bolivia , is a landlocked country in central South America. It is the poorest country in South America...

n-born statesman and jurist. He was a representative to the Congress of Tucumán

Congress of Tucumán

The Congress of Tucumán was the representative assembly, initially meeting in Tucumán, that declared the independence of the United Provinces of South America on July 9, 1816, from the Spanish Empire....

 of 9 July 1816 which declared the Independence

Argentine Declaration of Independence

What today is commonly referred as the Independence of Argentina was declared on July 9, 1816 by the Congress of Tucumán. In reality, the congressmen that were assembled in Tucumán declared the independence of the United Provinces of South America, which is still today one of the legal names of the...

 of the provinces of the River Plate and presided over the assembly that declared the independence of Bolivia.

Serrano was born in Chuquisaca

Chuquisaca Department

Chuquisaca is a department of Bolivia located in the center south. It borders on the departments of Cochabamba, Tarija, Potosí, and Santa Cruz. The departmental capital is Sucre, which is also the constitutional capital of Bolivia.-Geography:...

 (now Sucre

Sucre

Sucre, also known historically as Charcas, La Plata and Chuquisaca is the constitutional capital of Bolivia and the capital of the department of Chuquisaca. Located in the south-central part of the country, Sucre lies at an elevation of 2750m...

) and became a lawyer. He left for Tucumán due to persecution, and was elected to represent Charcas

Charcas

Charcas may refer to:* Charcas Province, a province in Potosí Department, Bolivia* Real Audiencia of Charcas, one of six political units of the Viceroyalty of Peru* Charcas, a historical name of Sucre, capital of Bolivia...

 in the 1813 Assembly

Asamblea del Año XIII

The Assembly of Year XIII was a meeting called by the Second Triumvirate governing the young republic of the United Provinces of the Río de la Plata on October 1812....

 and in the 1816 Congress in Tucumán, in which he acted as Secretary. He was a minister in the administrations of Aráoz and González, governors of the then much larger Tucumán Province

Tucumán Province

Tucumán is the most densely populated, and the smallest by land area, of the provinces of Argentina. Located in the northwest of the country, the capital is San Miguel de Tucumán, often shortened to Tucumán. Neighboring provinces are, clockwise from the north: Salta, Santiago del Estero and...

 and had represented Buenos Aires

Buenos Aires

Buenos Aires is the capital and largest city of Argentina, and the second-largest metropolitan area in South America, after São Paulo. It is located on the western shore of the estuary of the Río de la Plata, on the southeastern coast of the South American continent...

 in the 1815 Observation Junta.

In 1825, Serrano was President of the Assembly which declared Bolivian independence. He was made a member of the High Court of Chuquisaca in 1825 and in 1841 he was appointed the country's leading judge.