 By 1830, Claiborne Parish was created, and the old Warren Parish was mostly absorbed into Ouachita Parish, only to return as Carroll Parish a few years later.In 1838, Caddo Parish was created from Natchitoches, as were Madison and Caldwell parishes in the east.In 1839, Union Parish was formed from Ouachita, and Calcasieu was formed from St. Landry in 1840.