author
A little-known Spanish writer from the turn of the 20th century, he is remembered today for a fiercely patriotic work published after the Spanish-American War. His surviving public record is slim, which gives his lone widely accessible book an unusual historical curiosity.

by José María Avilés
José María Avilés is identified by Wikisource as a Spanish writer active in the 19th and early 20th centuries. The main work that is easily traceable today is La voz de España contra todos sus enemigos (1899), which is also listed by Project Gutenberg.
Beyond that, reliable biographical detail is scarce in the sources available online. Because of that, it is safer to describe him as a little-documented Spanish author whose known legacy rests mainly on that strongly nationalistic book, written in the aftermath of Spain's crisis at the end of the 19th century.
If you are coming to his work as a modern listener, the interest is less in a full personal story—which remains hard to confirm—and more in the period voice his writing preserves: passionate, political, and very much shaped by the anxieties of its time.