Terry Pratchett is one of the best fantasy winters. He wrote over 40 books in his Discworld series, finishing his lat book last year. I do not know the details of his death beyond it being alz related.
A favorite writer of mine. I was very aware of him toward the end of his life because of that, because of his right to die documentary, and because his variant of Alz was Posterior Cortical Atrophy, which is what my husband died of.