Who was the first non-colonial governor of Louisiana and the brother of Nathaniel Claiborne?
William C. C. Claiborne William Charles Cole Claiborne (c.1773-75 – 23 November 1817) was a United States politician, best known as the first non-colonial Governor of Louisiana. He also has the distinction of possibly being the youngest Congressman in U.S. history, though reliable sources differ about his age.
Antoine James de Marigny Antoine Jacques Philippe de Marigny de Mandeville (1811–1890), (also known as Antoine James de Marigny and Mandeville de Marigny), was the son of Bernard de Marigny de Mandeville and Anna Mathilde Morales, and the son-in-law of William C. C. Claiborne, the first Governor of Louisiana after statehood. He was a planter, merchant, military officer, and U.S. Marshal for eastern Louisiana.