Hmm, just gave your codes a go and no dice. I tried your Nolan's siege tome codes for 1.0 and 1.1, with 4 bronze axes in his inventory and with his inventory empty.
Thinking back to how I initiated Path of Radiance codes, I'd set up whatever item I wanted to be replaced in the correct slot, turn on the code and then go into the inventory, see that the items were replaced with the ones I wanted, leave the inventory, then turn the code off so nothing weird happens and the items deplete like normal from 80 or 255.
Is this how I should've been doing this? What was your process in creating the items in your screencaps? Thanks so much for your help! :)