Rosario Sansores

Rosario Sansores Prén (25 August 1889 – 7 January 1972) was a Mexican poet and journalist, known for works such as "Cuando tú te hayas ido" ("When You Have Gone"), a poem that served as the basis for the pasillo-style song "Sombras" ("Shadows"), by Ecuadorian composer Carlos Brito. Provided by Wikipedia