Question: Isidoro Montes de Oca was among the commanders of the army of a leading revolutionary general who would later serve as what?
Context: La Unión is a city and seat of the municipality of La Unión de Isidoro Montes de Oca, in the state of Guerrero, south-western Mexico.  In 2005 its population was 3,079. Puras de Villafranca, also known as Puras, is a village in the municipality of Belorado (Burgos, Spain) in the region of Montes de Oca, with historical links to Villafranca Montes de Oca. Francisco Montes de Oca y Saucedo (January 27, 1837 – March 14, 1885) was a Mexican politician and military surgeon with the rank of General Brigadier Médico Cirujano (Brigadier General MC). The University of Pinar del Río "Hermanos Saiz Montes de Oca" (Spanish: "Universidad de Pinar del Río "Hermanos Saíz Montes de Oca"", UPR) is a university located in Pinar del Río, Cuba.  It was founded in 1972. Isidoro Montes de Oca (1789–1847) was a Mexican-Filipino revolutionary general who fought in the Mexican War of Independence between 1810 and 1821.  He was among the commanders of the army of Vicente Guerrero and José María Morelos.  And was a trusted man of Vicente Guerrero and was his lieutenant-commander. Sierra de la Demanda is a "comarca" located south-east of the province of Burgos in the autonomous community of Castile and León, Spain.  It is bounded on the north-east by the Montes de Oca comarca, north-west by the Alfoz de Burgos, south-east by the province of Soria, south-west by the Ribera del Duero comarca, on the east by the province of La Rioja and west by the Arlanza "comarca".  It is named after the mountain sub-range of Sierra de la Demanda, the northwesternmost end of the Sistema Ibérico. The Oca river is a short river, about 70 km long, in the north of Spain.  It is an affluent of the Ebro river that flows through the province of Burgos.  It begins in the Sistema Ibérico range and flows north through the municipalities of Rábanos, Villafranca Montes de Oca, Valle de Oca, Alcocero de Mola, Prádanos de Bureba, Briviesca, Vileña, the shire of Bureba and Oña. Vicente Ramón Guerrero Saldaña (] ; August 10, 1782 – February 14, 1831) was one of the leading revolutionary generals of the Mexican War of Independence.  He fought against Spain for independence in the early 19th century, and later served as President of Mexico, coming to power in a coup.  He was of Afro-Mestizo descent, championed the cause of Mexico's common people, and abolished slavery during his brief term as president.  His execution in 1831 by the conservative government that ousted him in 1829 was a shock to the nation. Troncones is a relatively undeveloped, uncrowded beach village located about 20 mi north west of Zihuatanejo on the coast of the state of Guerrero.  It is located in the municipality of La Unión de Isidoro Montes de Oca and has a population of about 593 people (2005 census).  Hammocks and palm trees are in most yards, chickens roam the streets and loud nightlife is limited to very few weekly events, making for quiet nights.  Some local hotels and restaurants offer special events such as Movie Nights and Dance Parties, mostly during the Oct-May high season.  On Sundays, El Burro Boracho has shows of Mexican folkdance. Montes de Oca is a "comarca" located east of the province of Burgos, in the autonomous community of Castile and León.  It is bounded on the north by La Bureba, south by the Sierra de la Demanda comarca, on the east by the province of La Rioja and west by the Alfoz de Burgos.
Answer: President of Mexico