Initially, Orobio was owner of several Haciendas (estates) in Saltillo (in present Mexico), particularly those of Santa María and Mesillas, although he delivered them to a Captain of the Spanish army, Juan de Tameo, in 1707, "with ten small livestock sites, two major cattle herds and ten of Cavalry".
[clarification needed][1] Orobio joined the Spanish Army during his youth, where he was promoted to Coronel.
Osorio reportedly tried to fix all the damage that Franquis de Lugo had done to the missions of San Antonio.
However, even after signing peace agreements with the Apaches, assaults and "depredations" of this people in Texas continued between June 1738 and September 1739.
However, when he heard that the French were trading at lower Trinity or that perhaps they were tried to settle there, in Spanish territory, he sent expeditions to find them, but these failed.