Nightmares and Fairy Tales: 1140 Rue Royale
Curledup.com has a review of Nightmares and Fairy Tales: 1140 Rue Royale by Serena Valentino and Crab Scrambly. Reviewer Lance Eaton appreciates it as a kind of horror that does not rely solely on gore for shock value in which the creators' "talents for narration and sequential art blend together to create a deliciously dark tale."
Eaton would like some clarification of what is based on fact and what is fictionalized by Serena in the story, so I'll give some details. In the 1830s Louis and Delphine Lalaurie were prominent, rich socialites in New Orleans, but their reputations suffered when it became clear that they mistreated their slaves. Enslaving a person in the first place is mistreatment of course, but Lalauries crossed even the standards of their time. Later, they were found to have conducted cruel and bizarre experiments on their slaves. The house has been rumored to be haunted ever since. You can read about it on the Wikipedia page for Delphine Lalaurie, though you can see there is trouble in accounting for what is true and what is rumor in the Lalaurie case from the heading that reads, "This article or section may fail to make a clear distinction between fact and fiction."
The story of 1140 Rue Royale takes place after these events, when an elderly woman named Victoria and her young niece Rebecca move into the house formerly occupied by the Lalauries. The background for the story is based in reality, but the events of the book are entirely fictional aside from some flashbacks that are based on the history of the Lalauries.