Bernard Cornwell The Winter King. Arthur as a Celtic tribal warlord. Cornwell did a fair bit of research and while recorded history is a bit thin for this period of time, I think the story rings true Similar plot to Cornwell's Saxon Tales series. Young Saxon boy raised in Merlin's household, grows up to become one of Arthur's battle lords. Good story. I enjoyed reading.
The Lords of the North is a novel based in 9th Century Anglo-Saxon kingdoms Wessex and Northumbria. The book starts where The Pale Horseman left off. It is the third book in Bernard Cornwell's Saxon Stories.