LaLaurie is based on an actual historical figure who existed in New Orleans during the 17-1800s. She was also a socialite who secretly (with her husband) tortured and murdered her black slaves.Madame Marie Delphine LaLaurie was a high society Creole socialite in 1830s New Orleans. Her love of hosting elegant parties is matched only by her taste for the gruesome torture of her black slaves. LaLaurie's fate is revealed as one worse than death. And one that has not yet ended.New Orleans Voodoo Queen Marie Laveau takes her vengeance on Madame Delphine for the torture inflicted on her beau, one of Delphine's slave victims, the Minotaur. She presents Madame Delphine with a false love potion; the actual effects are much more sinister.Delphine wakes up to find her husband and daughters hanged before being buried alive and unmarked in her yard. Marie points out that she granted her immortality.Centuries later she is found and dug up by Fiona who wants to find out about the secret of eternal life. Fiona mocks her, though the two women seem to bond at times. She wants to use Delphine as leverage against Marie Laveau, first keeping Delphine locked up in her room and later turning her into the new maid of the school.