User blog comment:BeholdtheVision/COMMENT PLEASE/@comment-1897744-20100409212649

There is absolutely NO accurate record of ANY such thing occurring. Tolkien invented the modern day orc. (And he DID describe them; he gave the all sorts of wonderful background, too, because he's that type of person. Perhaps not entirely in the main three of LotR, but I KNOW they were mentioned in other works of his: http://lotr.wikia.com/wiki/Orc ) The original RPG was '87, though first additions began popping up in '83. No earlier.

GW even admits they're really Tolkien influence. (And, for the record, I know QUITE A BIT about GW. My mother has done numerous studies for them, because she does market research for the video game and table top gaming industry, among other things.)

Gods in Britain would, if we're following with the 'migration' idea, be Slavic and Baltic gods like these: http://www.godchecker.com/pantheon/slavic_baltic-mythology.php