Everything I have read about Nerval state that he killed himself out of dispare, madness, failure, etc. But two articles I found are first I have heard of him being murdered. Also the fact that he was buried in consecrated grounds would mean that he wasn’t considered a suicide by the church either. Much less dramatic then a tortured poet killing himself, but actually more inspiring that he didn’t give up.
Contemporary obituary, questions his suicide
short French article, claims that he was murdered by criminals who thought he was a police officer
French biography with lots of images
strange little pamplet with some pictures. haven’t found many pamplets in google books:
couple of articles about Jenny Colon, neither mention Nerval so its nice to see her as something other then just his muse