Ok, for some reason at Albernathy farm, I cant get the father, mother, and daughter to use the new beds I've build for them, and therefor cannot delete the old beds either. Is there something I'm missing here, I've assigned them the new beds. Doesn't seem to make a difference. Are there any console codes I can use to get rid of these nasty flea bag ridden beds? Playing on the PC

It's the beds themselves that are protected, unfortunately. You can remove beds that are used by generated (unnamed) settlers just fine.

I tried to 'punish' the Slog for being LITERALLY HALF my Minuteman radial quests (Slog, Tenpines, Slog, Jamacia, Slog... etc) by swapping their beds out for the tiniest, filthiest little cramped frames available.

Alas, I had to settle for removing their fences, yard toys, and chess set.