For the Telegraph, he named his five favorite books about the Crusades, including:
With three books about Richard the Lion Heart, Professor John Gillingham is his supreme biographer. On balance, Gillingham’s judgment in Richard I (1999) is that Richard was not gay. Gillingham explains Richard’s cold treatment of his wife, Berengaria, as the product of dynastic marriage and no more. Gillingham has a formidable knowledge of Latin, German and old French in all its forms, and his research is profound.Read about another book on Cartwright's list.
--Marshal Zeringue