Agustina López de Osornio

His son Juan Manuel de Rosas portrayed during his childhood

Agustina López de Osornio was born in Buenos Aires, daughter of Clemente López de Osornio and his second wife María Manuela Rubio y Díaz Gamiz.[2] She was married to León Ortiz de Rozas, the son of Domingo Ortiz de Rozas and Catalina de la Cuadra, belonging to a distinguished family of the city.[3]

His father and his brother Andrés Lopez de Osornio died defending his ranch from an Indian attack or malón, occurred in 1783 in Province of Buenos Aires.[4] After the death of her father, she administered his estancia known as Rincón de López,[5] located near Chascomús, on the banks of the Salado River.[6]

Her husband, was a noble officer of the Spanish Army, who also served as administrator of the haciendas of the Spanish Crown in the territories of the Río de la Plata.[7] She was the mother of at least a dozen children, mostly related to the main patrician families of Buenos Aires. His daughter Manuela Rosas, was married in Buenos Aires to the American Henry William Hope Bond, born in Baltimore.[8]

His maternal family descended from illustrious Spanish and Portuguese lineages, including a connection with the conqueror Melchor Casco de Mendoza, and with the fidalgos Gil González de Moura and Inés Núñez Cabral, belonging of the Cabral de Melo family.[9]