As we know, the Kaminoans were master cloners, as evidenced by their creation of the Grand Army of the Republic, but there were other cloning corporations as I understand (mainly because the Empire leased its major cloning operations to a company after the failed Kaminoan Rebellion). I am pretty sure if thinking logically that Palpatine is not the only maniacal evil Sith maniac out there who came up with the idea of a clone army.
My question is this: Is there any precedent in any Star Wars canon on a clone army before the Grand Army of the Republic?