William King
Along with Sandy Mitchell, the oldest of BL's stable of writers. Seriously, he wrote fluff for Rogue Trader.
Wrote the original Gotrek & Felix novels, which aren't as good as you remember them to be. Also wrote four and a half Space Wolf novels then quit in a huff for reasons unexplained.
He has since returned to the Black Library and penned a trilogy about Tyrion and Teclis. How he feels about having his two prior series that made his name being taken away from him is unknown however.
He recently finished his Macharian Crusade series of novels. He changes some of the fluff, but it seems to be in a good way. And is anyone surprised that there are Space Wolves in it?
Not Ben Counter