Eça de Queirós was a prominent Portuguese writer born on November 25, 1845, in Póvoa de Varzim. He is best known for his novels that critique society and explore themes of realism and naturalism. His most famous works include The Maias and The Relic, which reflect the social issues of 19th-century Portugal. Queirós was also a diplomat and served in various countries, including France and England. His experiences abroad influenced his writing style and perspective. He is considered one of the greatest Portuguese authors, and his works continue to be studied and appreciated for their literary significance and social commentary.