Juan Gregorio de las Heras

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Juan Gregorio de las Heras (Buenos Aires, 1780 – Santiago de Chile, 1866) was an Argentine military who took part in the South American Wars of Independence and was also a governor of the province of Buenos Aires.

He fought for the resistance against the British invasions of the Río de la Plata (1806–1807) and then entered the Army. In 1813 he took charge of a part of the Army of the Andes, replacing Antonio González Balcarce. After the Disaster of Rancagua in 1814, he returned to Mendoza, Argentina. He also participated in the liberating expedition to Peru.

After his retirement from the Army, he was appointed governor of Buenos Aires by the Chamber of Representatives, succeeding General Martín Rodríguez. He signed a treaty with Britain acknowledging the independence of the United Provinces of the Río de la Plata. In 1826 he was replaced by Bernardino Rivadavia.

De las Heras finally moved and settled in Chile, and died in Santiago in 1866, at the age of 86.