Todd Jensen writes...

I was recently rereading Roger Lancelyn Green's retelling of the Arthurian cycle (it was the January 2009 book for an Arthurian book club that I recently joined), and found this passage at the end of the section on the Quest for the Holy Grail:

"But when the last battle had been fought and the realm of Logres was no more, Percivale's kingdom made still a little light in the darkness of a Britain conquered and laid waste by the barbarians." (p. 248 of the old Puffin Books edition I bought as a boy).

Was this passage the inspiration (or at least, *an* inspiration) for your idea of Percival/Duval founding the Illuminati?