Twain, Mark, pseud. of Samuel Langhorne Clemens,1835–1910, American author, b. Florida, Mo. As humorist, narrator, and social observer, Twain is unsurpassed in American literature. His novel The Adventures of Huckleberry Finn, a masterpiece of humor, characterization, and realism, has been called the first (and sometimes the best) modern American novel.
