https://en.wikipedia.org/wiki/Revenant

A revenant is a visible ghost or animated corpse that was believed to return from the grave to terrorize the living.{1} The word "revenant" is derived from the Latin word, reveniens, "returning" (see also the related French verb "revenir", meaning "to come back&quot .

Vivid stories of revenants arose in Western Europe (especially Great Britain, and were later carried by Anglo-Norman invaders to Ireland) during the High Middle Ages. Revenants were also known in Old Irish Celtic Mythology as The 'Neamh Mairbh'. Though later legend and folklore depicts revenants as returning for a specific purpose (e.g., revenge against the deceased's killer), in most Medieval accounts they return to harass their surviving families and neighbours. Revenants share a number of characteristics with folkloric vampires.

Many stories were documented by English historians in the Middle Ages. William of Newburgh wrote in the 1190s, "It would not be easy to believe that the corpses of the dead should sally (I know not by what agency) from their graves, and should wander about to the terror or destruction of the living, and again return to the tomb, which of its own accord spontaneously opened to receive them, did not frequent examples, occurring in our own times, suffice to establish this fact, to the truth of which there is abundant testimony".{2} Stories of revenants were very personal, always about a specific individual who had recently died (unlike the anonymous zombie depicted in modern popular culture), and had a number of common features. But like zombies, revenants were undead and typically malevolent creatures.