Where do old knights go?

Apparently they all got buried in parking lots. http://www.heavy.com/news/2013/03/medieval-knight-remains-found/

Much like old kings did (q.v. Richard III).

I saw that a few weeks ago. Seems to happen a couple of times every year in the U.K. Curious about the carved limestone slab tho. Not entirely sure what its purpose was.

Wonder what happened to this fellow. http://io9.com/medieval-skeleton-found-dangling-from-the-roots-of-a-fa-173049508...