Military and Venezuelan politician, son of José Tadeo Monagas and Luisa Oriach, born in Aragua de Barcelona in 1831 and died in the same town on June 12, 1880.
In 1857, as a representative of the city of Maturín, signed the Constitution of April of that year. In March of the following year he/she was appointed commander of Barcelona, since from that shows supporter of President Julián Castro, despite which the general Justo Briceño, representative of the Government, imprisoned him in the castle of Puerto Cabello, the distrust of his loyalty to the regime.
In July 1868, after the triumph of the Blue Revolution, he/she began his military career to be named head of the State of the army. In this role, he/she directed the attack to Puerto Cabello, plaza it occupied in August. From there he/she went on to manage the West campaign, where he/she managed to triumph over the so-called West League, after the conquest of San Carlos and Barquisimeto.
The blue party, fusion of conservatives and Liberals, was divided between the direction of José Ruperto Monagas and Domingo Monagas Marrero, son of José Gregorio Monagas. The death of José Tadeo, in 1868, deepened internal division of Les Bleus. José Ruperto again took the head of biggest State and supplemented his father in the direction of Les Bleus. At the Congress in 1869 was discussed the leadership of José Ruperto and his cousin Domingo; the result of the Congress left José Ruperto as first designated country. Before the abandonment of the program of the Blue Revolution by the new President, Les Bleus left the Government and became the opposition.
The recrudescence of the civil war, José Ruperto returned to take up arms and headed for Maracaibo, to cope with the general thumb Venancio insurrectionist; Guillermo Tell Villegas left as President of the Republic.
In 1870 the presidential elections unfolded amid a climate of growing chaos and anarchy, to the attempt of some States to segregate the Republic; José Ruperto emerged victorious from the same, but the legislature refused to proclaim him President alleging a purely formal matter. In February of that year, there was the invasion of Antonio Guzmán Blanco, supported by the Liberals, so José Ruperto returned to command of the army, but could not prevent the triumph of Guzmán, who on April 27 of that year took Caracas José Ruperto forced to sign accountability. Then, Guzmán was proclaimed as the new President.
After these events, José Ruperto withdrew from public life and returned to his possessions in Aragua de Barcelona, where he/she died ten years later.