To the people arguing over Atheism yes there were atheists in the Medieval era, and there were quite famous and open atheists, including one particular English King who made it clear the religion was his bitch and not the other way around, though I forget the exact king right now.
You're thinking of Henry VIII, who caused the Anglican church to be separated from the Roman Catholic Church. And he wasn't denying God in any way, shape or form: only the Pope.
He still believed in God, feared Him, and worshiped Him.