Estanislao Lpez was a caudillo and governor of the province of Santa Fe, Argentina, between 1818 and 1838, one of the foremost proponents of provincial federalism, and an associate of Juan Manuel de Rosas during the Argentine Civil War. He is considered an iconic figure in Santa Fe and one of the most influential political actors in the Argentine conflicts of the 1820s and 1830s.
Lpez was born in Santa Fe. An illegitimate child, he was baptized with his mothers last name at the request of his father, Juan Manuel Roldn. Roldn sent the youth away to fight against Maln raids in the Gran Chaco region at age 15. He fought in the retake of Buenos Aires from the British invasion of 1806, and in the Argentine War of Independence under the command of Manuel Belgrano during this latter conflict, Lpez was held prisoner in Montevideo in 1810.
Source: Wikipedia