Mark Twain was born Samuel Langhorne Clemens in the town of Florida, Missouri, in 1835. His family moved to Hannibal when he was 4 years old to a town on the Mississippi River much like the town depicted in his famous novel, The Adventures of Tom Sawyer (1876) and The Adventures of Huckleberry Finn (1884). Sail down the Mississippi with Huckleberry Finn and the runaway slave, Jim.