Donuel, I'm not quite clear on your question about King Arthur documents! This tale survives in two complete manuscripts, both of which are in the Bibliothèque Nationale in Paris, and a number of fragments. One of the manuscripts is copiously illustrated, with the kind of drawings I would be capable of producing (in other words, not the intricate and detailed images from, say, the Book of Kells, but all the more fun for that!). I didn't discover the manuscripts and I'm not the first to study them, but I am the first to focus on the story and the telling of the story, and once the thesis has been accepted I'll feel more able to talk about my other discoveries about how it came to be created.