I think you misunderstood me. When you stack crafted items that are identical other than quality only the quality changes in my experience. The crafter information does not. These items were all crafted by me -- there is no such thing as a weapon grade knife that can be bought from npc's. Also, not previously mentioned I had a dagger and a claymore which I crafted and which were never stacked with anything that now also have no guild information. I am almost positive that these were subsequent to my guild creation, I definitely remember seeing guild information on all these items previous to my guild name change. I have been known to remember things that never were in the past so I equivocate. If I really thought I was remembering wrongly I would not have continued with this discussion.
I am currently in the process of gathering materials to craft with of several types, I expect to craft a knife, a sword, an axe, a shield part, an ingot or stock, some food before I change my guilds name again. This will take some time not just because I have to sift through my mules for the proper books/equipment.