From time to time, my husband will start talking about someones death. Could he be dreaming it up?

There's likely no way to know what is prompting the comments, but it's unlikely to be dreaming. Alzheimer's patients tend not to dream. The apparent lack of dreaming is actually an early symptom.

Never argue or correct a person with dementia. Being loving and caring and smile.

My Mother had LBD, and she would always tell me someone had died. Her brother, his son, people in her family. She would tell me in this matter of fact way. Not upset about it.. Then one day she told me someone told her she had died, and asked me if she was dead. I can not begin to tell you how disturbing this was, I was at a loss for words. She had audio hallucinations., and she was hearing this over the radio, she said, she would put her hear to the radio and listen.The radio was broken. The Dr gave her medication and it helped, but it turned her into a zombie. But it calmed her down.

my hunch is that it is someone who died long ago....

Grace + Peace,

Bob

I agree with Sunnygirl1.

You may never know the origin of his comments. A man I knew with Alzheimer's would mumble and mutter but I could always make out the words, "Mr. Sullivan". I had no idea who "Mr. Sullivan" was. A previous boss? A former neighbor? Who knows?

I suppose he could be remembering something from his past or hearing others talk about it in the facility he is in. Or he could be dreaming or even having hallucinations. Dementia can cause people to say unusual things. As long as he isn't upset, worried or anxious, I would just listen and try to be respectful of what he is saying, even if it's all imagined. I would mention it to his doctor though.