Didn't know, but I really don't see how that matters. I've only read Mists of Avalon, and I enjoyed it as an original retelling of the Arthurian mythos, but otherwise it wasn't particularly noteworthy. Even had I worshipped the book, I don't see why it follows that I'd have worshipped the author in turn.

I think that's the big problem of a lot fo fandom these days - the belief that the Author is some kind of figure we should worship because he wrote a good book (the following around John Green is a great example of this).