A digital database is being developed to include victims of slavery across the South. Again, this is a "work-in-progress," not something that is available today. Archivists recently gave a presentation on “The Lantern Project: Uncovering Local African-American History” at the Columbus-Lowndes Public Library.
The project is headed by Mississippi State. It will include digitized and searchable legal records of slavery in Mississippi and Lowndes County.
You will be able to search at libraries at MSU, Ole Miss, Delta State, Natchez, and Columbus, along with Montgomery, Alabama.
The three-year project is funded by U.S. National Archives and Records Administration.