There's a Golden Age science fiction short story by Henry Kuttner -- "Home is the Hunter," anthologized and reprinted a dozen times -- where an aristocratic caste of duelists entomb the bodies of their vanquished foes in transparent resin and keep them on display. When they are inevitably defeated in turn, all of their corpse-trophies are surrendered to the victor. It's a pretty important plot point in a very influential 1940s story.