Ildefonso Ramos Mexía y Ross (August 2, 1769 – June 24, 1854) was an Argentine military man and politician, who served as alcalde,[1] governor and legislator of Buenos Aires.

[2] He was born in Buenos Aires, the son of Gregorio Ramos Mexía, born in Sevilla, and María Cristina Ross, belonging to a family of Scottish and Creole origin.

He was married with his relative María Inés Basavilbaso, daughter of José Ramón Basavilbaso and María Lorenza Ferrín.

[3]