Common at any age and especially common after a death, read across traditions as the line behind you rather than as news about anyone.
Across most traditions that bother with family figures, a grandfather stands for the line behind you: inherited character, old authority, a set of rules that were already in place when you arrived. He shows up just as readily whether he is alive or long dead, and his presence is never taken as news about anybody's health or lifespan, his own included. That point is worth making early, because these dreams arrive often enough in the weeks after a funeral for people to suspect otherwise.
Interpreters generally read the older man in a dream as counsel rather than command. He turns up at points where a decision needs weighing, and sleepers often report him saying very little, or saying one plain thing they remember for days afterwards. Where the waking relationship was warm, the reading leans towards support and continuity. Where it was distant or difficult, the same figure gets read as unfinished family business, and neither version makes for a better dream.
People who have lost a grandparent describe dreaming of him quite ordinarily: sitting in his chair, driving, saying nothing in particular. Dreams like that are widely reported during grief and for many years beyond it, and most who have them find them consoling rather than alarming. Nothing in the tradition requires you to hunt for a message, and nothing suggests the dream announces a further loss.
A general reading cannot compete with a specific memory here. Somebody raised by a grandfather dreams of a parent, whatever a dictionary files him under. Somebody who met him twice dreams of a photograph. Before consulting any list, ask what he represented in your household and what was left unsaid between the two of you, because that is the material this dream is built from.


