There is a glitch where if you had a follower who died on your travels, their corpse will try to attend your wedding xD

This happened to me, and I hear the way to fix it is to have another companion follow you. So I will try that and see if it works.

Cool. Can you loot them?

Yeah and to fix it you need to go apologize to your lady/man, and use Fus Ro Dah on the corpse and put it in the corner so the people do not notice the body