Mariano de Osorio (; 1777–1819) was a Spanish general and

Governor of Chile The Royal Governor of Chile ruled over the Spanish colonial administrative district called the Captaincy General of Chile, and as a result the Royal Governor also held the title of a Captain General. There were 66 such governors or captains du ...

, from 1814 to 1815.

Early career

Osorio was born in

Seville Seville (; es, Sevilla, ) is the capital and largest city of the Spanish autonomous community of Andalusia and the province of Seville. It is situated on the lower reaches of the River Guadalquivir, in the southwest of the Iberian Peninsula ...

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

. He joined the Spanish army and as many of his contemporaries, his military career began during the Spanish

Peninsular War The Peninsular War (1807–1814) was the military conflict fought in the Iberian Peninsula by Spain, Portugal, and the United Kingdom against the invading and occupying forces of the First French Empire during the Napoleonic Wars. In Spain ...

in 1808 as an artillery general, as well as the professor for mathematics in the military school. In 1810, was appointed head of the military factory of Catalonia. In 1812, was destined to the Royal Army in Peru. In 1812 he resettled in

Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Fi ...

, where he married Joaquina de la Pezuela, daughter of Peruvian Viceroy

Joaquín de la Pezuela Joaquín or Joaquin is a male given name, the Spanish version of Joachim. Given name * Joaquín (footballer, born 1956), Spanish football midfielder * Joaquín (footballer, born 1981), Spanish football winger * Joaquín (footballer, born 1982 ...

. In the

Disaster of Rancagua The Battle of Rancagua, also known in Chile as the Disaster of Rancagua, occurred on October 1, 1814, to October 2, 1814, when the Spanish Army under the command of Mariano Osorio defeated the rebel Chilean forces led by Bernardo O’Higgins ...

(1814) he was able to defeat the forces of

Bernardo O'Higgins Bernardo O'Higgins Riquelme (; August 20, 1778 – October 24, 1842) was a Chilean independence leader who freed Chile from Spanish rule in the Chilean War of Independence. He was a wealthy landowner of Basque-Spanish and Irish ancestry. Althou ...

and

Jose Miguel Carrera Jose is the English transliteration of the Hebrew and Aramaic name ''Yose'', which is etymologically linked to ''Yosef'' or Joseph. The name was popular during the Mishnaic and Talmudic periods. *Jose ben Abin *Jose ben Akabya *Jose the Galilean ...

. In the same year he became the

Chile

With Osorio's victory at Rancagua, the period known as "reconquest" (Reconquista) of Chile had begun. Osorio sought to reinstate order and justice and with military measures he prevented the onslaught of the insurgents. In 1816 he returned to

Lima Lima ( ; ), originally founded as Ciudad de Los Reyes (City of The Kings) is the capital and the largest city of Peru. It is located in the valleys of the Chillón River, Chillón, Rímac River, Rímac and Lurín Rivers, in the desert zone of t ...

and

Francisco Marcó del Pont Francisco Casimiro Marcó del Pont y Ángel (; June 25, 1770 – May 19, 1819) was a Spanish soldier and the last Governor of Chile. He was one of the main figures of the Chilean independence process, being the final Spaniard to rule as Royal G ...

was made new Governor of Chile. When the Spaniards lost the

Battle of Chacabuco The Battle of Chacabuco, fought during the Chilean War of Independence, occurred on February 12, 1817. The Army of the Andes of the United Provinces of the Río de la Plata, led by Captain–General José de San Martín, defeated a Spanish for ...

, he returned to Chile. There he succeeded in securing victory in the

Second Battle of Cancha Rayada The Battle of Cancha Rayada (March 16, 1818), (also known in Chile as the Second Battle of Cancha Rayada or Surprise of Cancha Rayada) was fought in Chile between South American patriots and Spanish royalists, during the Osorio's campaign in th ...

on March 18, 1818. At this battle O'Higgins's arm was injured. The

Battle of Maipu A battle is an occurrence of combat in warfare between opposing military units of any number or size. A war usually consists of multiple battles. In general, a battle is a military engagement that is well defined in duration, area, and force ...

, however, was a major defeat for the Spaniards, and it signified the end of the Spanish authority in almost all of Chile, with the exception of the island of Chiloé and the city of

Valdivia Valdivia (; Mapuche: Ainil) is a city and commune in southern Chile, administered by the Municipality of Valdivia. The city is named after its founder Pedro de Valdivia and is located at the confluence of the Calle-Calle, Valdivia, and Cau-Cau R ...

. Osorio proceeded to

Cuba Cuba ( , ), officially the Republic of Cuba ( es, República de Cuba, links=no ), is an island country comprising the island of Cuba, as well as Isla de la Juventud and several minor archipelagos. Cuba is located where the northern Caribbea ...

, where he died in 1819 of

malaria Malaria is a mosquito-borne infectious disease that affects humans and other animals. Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches. In severe cases, it can cause jaundice, seizures, coma, or death. S ...

. {{DEFAULTSORT:Osorio, Mariano 1777 births 1819 deaths People from Seville Spanish generals Royal Governors of Chile Spanish military personnel of the Chilean War of Independence Captaincy General of Chile Royalists in the Hispanic American Revolution Spanish military personnel of the Napoleonic Wars