El Gaucho Martín Fierro is a narrative poem written in verse and a literary work considered exemplary of the gaucho genre, written by the Argentina poet José Hernández in 1872. It also has a continuation, entitled The return of Martín Fierro , written in 1879; this last book is also known as "The return" and the first part, as "La ida". Both "La ida" and "Lauelta" have been selected as Argentine national books, united under the generic title of "El Martín Fierro". In "La ida", Martín Fierro is a working gaucho who is turned into a "matrero gaucho" by the social injustice of the historical context - that is, a gaucho outside the law.