Question: Which second governor was the territory, split into Mississippi and Alabama in 1819, named after? 
Context: Georgia ( ) is a state in the southeastern United States.  It began as a British colony in 1733, the last of the original Thirteen Colonies.  Named after King George II of Great Britain, the Province of Georgia covered the area from South Carolina down to Spanish Florida and New France along "Louisiana (New France)", also bordering to the west towards the Mississippi River.  Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788.  In 1802-1804, western Georgia was split to the Mississippi Territory, which later split to form Alabama with part of former West Florida in 1819.  Georgia declared its secession from the Union on January 19, 1861, and was one of the original seven Confederate states.  It was the last state to be restored to the Union, on July 15, 1870.  Georgia is the 24th largest and the 8th most populous of the 50 United States.  From 2007 to 2008, 14 of Georgia's counties ranked among the nation's 100 fastest-growing, second only to Texas.  Georgia is known as the "Peach State" and the "Empire State of the South".  Atlanta is the state's capital, its most populous city, and has been named a global city. Claiborne County is a county located in the U.S. state of Mississippi.  As of the 2010 census, the population was 9,604.  Its county seat is Port Gibson.  The county is named after William Claiborne, the second governor of the Mississippi Territory. Archibald Roane (1759/1760January 18, 1819) was the second Governor of Tennessee, serving from 1801 to 1803.  He won the office after the state's first governor, John Sevier, was prevented by constitutional restrictions from seeking a fourth consecutive term.  He quickly became caught up in the growing rivalry between Sevier and Andrew Jackson, and was soundly defeated by Sevier after just one term.  Roane served as an attorney general in the Southwest Territory in the early 1790s, and later served as a judge on the state's Superior Court of Law and Equity (1796–1801) and the Supreme Court of Errors and Appeals (1815–1819). The U.S. state of Alabama has 67 counties.  Each county serves as the local level of government within its borders.  The land enclosed by the present state borders was joined to the United States of America gradually.  Following the American Revolutionary War, West Florida was ceded to Spain by treaty while the remainder was organized primarily as the Mississippi Territory, and later the Alabama Territory.  The territorial assembly established some of the earliest county divisions that have survived to the present, including the earliest county formation, that of Washington County, created on June 4, 1800.  In 1814, the Treaty of Fort Jackson opened the territory to American settlers, which in turn led to a more rapid rate of county creation.  Alabama was admitted to the Union as the 22nd state in 1819.  The Alabama state legislature formed additional counties from former native lands as the Indian Removal Act took effect and settlers populated different areas of Alabama.  In 1820, Alabama had 29 counties.  By 1830 there were 36 and Native Americans still occupied large areas of land in northeast and far western Alabama.  By 1840, 49 counties had been created; 52 by 1850; 65 by 1870; and the present 67 counties by 1903.  Houston County was the last county created in the state, on February 9, 1903. The Territory of Alabama (sometimes Alabama Territory) was an organized incorporated territory of the United States.  The Alabama Territory was carved from the Mississippi Territory on August 15, 1817; lasting until December 14, 1819, when it was admitted to the Union as the twenty-second state. Newton Edmunds (May 31, 1819 – February 13, 1908) was an American politician who served as the second Governor of Dakota Territory, serving during the American Civil War. Thomas Bibb (May 8, 1783 – September 20, 1839) was the second Governor of the U.S. state of Alabama from 1820 to 1821.  He was born in Amelia County, Virginia in 1783.  He was president of the Alabama Senate when his brother, Governor William Wyatt Bibb, died in office on July 10, 1820, and took over as governor for the remainder of his term.  He was married to Parmelia Thompson from 1809 to his death in 1839. John Anthony Winston (September 4, 1812 – December 21, 1871) was the 15th Governor of the U.S. state of Alabama from 1853 to 1857.  He was born in 1812 in Madison County, Alabama Territory, and became the first native born governor of Alabama.  He was a son of William Winston and Mary Cooper of Tuscumbia Alabama.  William was a son of Anthony Winston and Keziah Jones former residents of Buckingham County Virginia.  John Anthony Winston married his first cousin, Mary Agness Jones, (born ca. 1819 and died ca. 1835) on August 7, 1832 in Madison County Alabama.  He died December 21, 1871 in Mobile, Alabama and is buried in the Winston Family Cemetery (privately owned) near Gainesville in Sumter County Alabama.  He had only one child, a daughter, Mary Agnes Winston.  In January 1867 he presented his credentials to the United States Senate as Senator-elect from Alabama for the term 1867–1873, but was not permitted to take his seat. Lee Cruce (July 8, 1863 – January 16, 1933) was an American lawyer, banker and the second governor of Oklahoma.  Losing to Charles N. Haskell in the 1907 Democratic primary election to serve as the first governor of Oklahoma, Cruce successfully campaigned to succeed Haskell to serve as the second governor of Oklahoma.  As governor, Cruce was responsible for the establishment of the Oklahoma Department of Highways and the Oklahoma State Capitol.  He worked hard to enforce prohibitions on alcohol and gambling, going so far as to use the state militia to stop horse racing.  He was succeeded by Robert L. Williams. The Territory of Mississippi was an organized incorporated territory of the United States that existed from April 7, 1798, until December 10, 1817, when the western half of the territory was admitted to the Union as the State of Mississippi and the eastern half became the Alabama Territory until its admittance to the Union as the State of Alabama on December 14, 1819.
Answer: William Claiborne