Bernardino de la Trinidad González Rivadavia y Rivadavia (Buenos Aires, May 20, 1780-Cádiz, September 2, 1845). He was an Argentine politician. -Secretary Minister of War; Minister of Government and Exchequer of the First Triumvirate (1811 - October 8, 1812).

-Minister of Government and Foreign Affairs of Buenos Aires (1821-1824).

-President of the United Provinces of Río de la Plata (February 8, 1826 -June 27, 1827).

In 1810, he participated in the Revolution of May and subsequently militated in the moderate group led by Cornelio de Saavedra (1759-1829). After the victory in December 1810 over the radicals of Manuel Moreno (1782-1857), he was a member of the Governing Board in 1811. From 1811, he began to play an important role when he was appointed by the First Triumvirate of Buenos Aires (October 1811), from the Ministry of War, Exchequer and Governance. When the military revolution of 1812 occurred, he retired temporarily from power along with the Triumvirate and later, he was appointed Ambassador of the United Provinces in Europe (1814-1816). In 1820, he returned to his country and he was in charge of the Ministry of Government from which established the representative system and significant improvements, such as Statistical Recording, the Official Record and decreed the creation of the University. He reformed primary education and were founded some schools. He also created the Charitable Society instead of the Brotherhood of Charity. In 1824, when the Government of the General Martín Rodríguez (1771-1845) ended, the General Juan Gualberto Gregorio de Las Heras (1780-1866) was appointed as Governor of Buenos Aires. Las Heras made the project of a General Constitutional Congress for the nation a reality. Las Heras proposed him to follow in the same Ministry, but Rivadavia renounced, and during a year he was a special envoy of the Government at the Court of London. On February 8, 1826 the National Constituent Congress appointed him President of the Argentine Republic. During his Government, he establishes a unitary system through the Constitution of 1826, introducing many improvements as for example the promotion of the Canal of the Andes, improved instruction, the fisheries in Patagonia or the mining activities. He continued the war initiated with Brazil in 1825 because of the issue of the Eastern Strip (which included the current Uruguay). He was forced to resign in July 1827, and then he was exiled in Europe, living since then retired from public life.