Golo Mann was a renowned German historian, essayist, and writer, and the third child of the novelist Thomas Mann. He is best known for his comprehensive work 'German History of the 19th and 20th Centuries', a standard work on the subject. After emigrating from Nazi Germany, he held academic positions in the United States before returning to Europe after the war. His historical writing is noted for its narrative style, psychological insight, and focus on the role of individuals in history.