Hello Mr. Cornwell,
I have just discovered you and am a big fan having just completed the Saxon Chronicles.
As a hobby, I am a student of religion and am interested in how Christianity may have influenced the “Dark Ages” and set it in motion. If you’ve read Tom Harpurs The Pagan Christ, he gives examples of how Christianity took away from the Gnostic and Pagan beliefs of a person having direct communion with God absent the rules imposed by the Church.
My question is this: Have you thought about writing of the Dark Ages as I noticed a timeline absence in your collective writings  which absent the years 900 to 1300 or thereabouts. It may be interesting to discover what was going on during those times?
Sincerely, and I look forward to reading more of your works
Mark Stumacher, MD