Not really. Howard is probably the most visible and influential fantasy author to imagine an ancient pre-history of Europe that involves metal working. I'm just going to assume you weren't talking about a Stone Age tech level, so pre-1700BC and metal working and you've veered very much off the 'historical Europe' bandwagon. Nothing wring with that of course, but the 'history' element is essentially gone at that point.Lol. Primal thule conan territory. Thats a funny way of putting it.