[4] He completed his elementary education in the city and traveled to Europe to study at the University of Seville, where he obtained his law degree in 1759.

She was a daughter of Guillermo Ross and María Antonia del Pozo Silva, belonging to a family of Scottish and Creole origin .

[5] He held various political positions in Buenos Aires including as regidor and alcalde of first vote in 1774,[6] being appointed to the office of attorney general of the city in 1775.

He was succeeded by his son José Ramón Basavilbaso, who also served as a government notary during the post colonial period.

[10] During his residence in Spain he had served like intermediary between the Spanish Court and his father, who held the position of administrator general of the Correo of the Río de la Plata.