Background
Born September 7, 1681 in Buenos Aires, he was the son of Francisco López Osornio (Spanish) and Tomasa Merlo de la Mota (porteña).
Born September 7, 1681 in Buenos Aires, he was the son of Francisco López Osornio (Spanish) and Tomasa Merlo de la Mota (porteña).
He served as Captain of the urban militias of Buenos Aires during the Viceroyalty of Peru. On September 11, 1701 Francisco López was married in Metropolitan Cathedral, to María Gamiz de las Cuevas Álvarez Lasarte. They had nine children: Domingo, Lorenzo, María, Tomasa, Juana, Justa, Faustina, Clemente and Pascual.
In 1720s López de Osornio was appointed Alférez real, in charge of the military fort of Barragán, place where had ordered the construction of the first chapel.
Francisco López de Osornio was Captain of militia. These militias were engaged in protecting livestock and town from attacks by Indians.