Mark Twain three of his siblings survived childhood: Orion (1825–1897), Henry (1838–1858), and Pamela (1827–1904). His sister Margaret (1830–1839) died when Twain was three, and his brother Benjamin (1832–1842) died three years later. His brother Pleasant Hannibal (1828) died at three weeks of age. When he was four, Twain's family moved to Hannibal, Missouri, a port town on the Mississippi River that inspired the fictional town of St. Petersburg in "The Adventures of Tom Sawyer" and the "Adventures of Huckleberry Finn". Slavery was legal in Missouri at the time, and it became a theme in these writings. His father was an attorney
Mark Twain Riverboat ten years of operation and it got accidentally destroyed after falling from a crane onto its drydock. "Richard F. Irvine" came into service on May 20, 1973, but was renamed "The Liberty Belle" in 1996 after everything except for the hull, boiler, and engines was stripped off, and an all-new superstructure was constructed from aluminum and vinyl. The Frontierland area of Disneyland Park has the unique distinction of featuring two riverboats, "Mark Twain" and "Molly Brown". Each riverboat features a recorded conversation between the Captain and Mark Twain or Molly Brown. Since the storyline takes place in the fictional town