I also have this same issue. No trophies showed up from the start and I tried manually saving before giving the head to Wallace to see if at any time the trophies would show up after but to no avail.
I had the same bug right after the samhain questline, fixed it and now, after I have completed the game, it has randomly come back. I don't know what to do anymore....
I also have the same issue for this I have 2 huntsman torso pieces