Sor (Sister) Juana Inés de la Cruz (12 November 1648/51 – 17 April 1695), fully Juana Inés de Asbaje y Ramírez de Santillana, was a self-taught scholar, poet of the Baroque school, and nun of New Spain. Although she lived in a colonial era when Mexico was part of the Spanish Empire, she is considered today a Mexican writer, and stands at the beginning of the history of Mexican literature in Spanish language.
Source: http://en.wikipedia.org/wiki/Juana_Inés_de_la_Cruz