Open CT2, open the game, go to the hex editor, press CTRL+F, type "Copper", press enter (or find), on the right position overwrite "Copper" with "Auryns", save, exit...play.

By the way, even if you give name to those items, they probably will still crash your game.

AR fix a value on the RAM of the game, if that place is used for something other, then the game could crash or work not correctly. Anyway, do the above and find the hex values of the word "Copper", then go to Desmune and when you are in the game, make a memory dump, then search the hex values. From there you need to build your AR code but don't ask me how...I never used a cheat device after the PS1 :p