Week in review It seems like you're referring to the famous American author Mark Twain. Samuel Langhorne Clemens was his real name, but he's better known by his pen name, Mark Twain. Twain was renowned for his novels like "The Adventures of Tom Sawyer" and "Adventures of Huckleberry Finn," which are classic pieces of American literature. He was celebrated for his wit, satire, and keen observations of American society.