Answer
Bruxo do Cosme Velho, meaning "The Wizard of Cosme Velho," is the popular nickname given to Joaquim Maria Machado de Assis. Machado de Assis was a renowned Brazilian writer, widely regarded as one of the greatest figures in Brazilian literature. He was known for his mastery of the short story and novel, and his works often explored psychological realism, social criticism, and existential themes.