I’ve seen people talk about actors and artists that had a terrible time.
My own would be Anne Rice. She wrote Interview with the Vampire after her young daughter died of Leukemia. Then her husband suddenly died of a brain hemorrhage. I suspect her Christian, anti-fanfic phase was a result of mental illness and manipulation from the publishers, although I don’t think she ever apologized.
Any who have works published against their wishes after their death. Academics can examine the primary sources, but actual publication is disrespectful.
I’d still love to read J. D. Salinger’s pending unpublished works which his family said they would eventually publish.