Ghost of Honor

It is moderately common for conventions to deliberately list a deceased person as a guest of honor with the intention of drawing special attention to that person's contributions to the field.

This is slightly controversial — a few feel that it is always tacky — but the majority opinion seems to be that if done with dignity, it's a Good Thing. Unfortunately, the most common title used is "Ghost of Honor," and many people who approve of having a posthumous guest object to the punning title. "Memorial Guest", "Historical Guest", and ''Posthumous GoH" and other such combinations are also used with fewer objections.

This title is never used for a Guest of Honor who died after being invited. The normal practice in a case like that is to continue to list the person as a GoH, but to note that they are deceased. Sometimes an additional GoH is invited and added to the list; sometimes not. But it's hyper-tacky to delist a GoH for any reason other than their own choice, and most particularly to do so because they died.