How do you find a deceased person?

Doing this sort of research is like solving a mystery. You have to make intelligent use of whatever clues you have and chase down the leads.

If you know when the person died you can search newspaper archives for the obituary . You can search for death certificates and from the place of death, you may be able to make a reasonable guess of the cemetery. You can search many cemetery records on line and people have made records of old cemeteries so if you can made a guess of possible cemeteries you can search there.

Some links are given below. You can find books on how to do genealogical research at your local library or you can actually hire someone to search for you.