Collection: About King Raven

Genre: Adult Historical/Legend

Series length: Three books

Violence: Moderately strong violence, in accordance with the historical era

Magic/Supernatural: A few light, borderline elements

Romance: Moderate, with a few sexual references, nothing overly explicit 

Christian/spiritual element: Subtle until book 3, in keeping with the Christian beliefs of the time period

Recommendation: Readers of legends and those who want  descriptive and sweeping historicals (like Ken Follet or Jame Mitchner) on a smaller scale

You might like this book if you liked... 
Robin Hood or the works of Ken Follet or James Mitchner