"Vida De Lazarillo De Tormes Y De Sus Fortunas Y Adversidades" by Anonymous is a Spanish novel published in 1554. Written as a long letter, it tells the autobiographical story of Lázaro de Tormes, who recounts his life from miserable childhood through adulthood and marriage in sixteenth-century Spain. Serving various masters, Lázaro witnesses society's vices and hypocrisy, particularly among clergy and religious figures. This ironic portrait of Spanish society became a precursor to the picaresque novel genre.
Wikipedia page about this book: en.wikipedia.org/wiki/Lazarillo_de_Tormes es.wikipedia.org/wiki/La_vida_de_Lazarillo_de_Tormes