author
A little-known 19th-century Spanish-language writer, remembered for a sharp social critique that links class struggle in Spain with the lives of Black people in Cuba. His surviving work stands out for its attention to inequality, labor, and race across the Spanish-speaking world.

by Ramón J. Espinosa
Very little biographical information about Ramón J. Espinosa could be confirmed from the sources available here. He appears to be known chiefly for El proletario en España y el Negro en Cuba, a short 19th-century work preserved by Project Gutenberg.
That book examines social conditions in Spain alongside the experience of Black people in Cuba, suggesting a writer deeply interested in injustice, power, and the lives of people pushed to the margins. Even with so few personal details surviving, the work gives him a distinct place among authors who used writing to confront the social questions of their time.
Because reliable author records were scarce, it is safest to view Ramón J. Espinosa as an obscure but compelling voice whose reputation rests on this one notable text.