Steven RuncimanSir James Cochran Stevenson Runciman (7 July 1903 – 1 November 2000), known as Steven Runciman, was an English historian best known for his three-volume ''A History of the Crusades'' (1951–54).
His three-volume history has had a profound impact on common conceptions of the Crusades, primarily portraying the Crusaders negatively and the Muslims favourably. Runciman was a strong admirer of the Byzantine Empire, and consequently held a bias against the Crusaders for the Fourth Crusade evident in his work. While praised by older crusade historians as a storyteller and prose stylist, he is viewed as biased by some contemporary historians. Provided by Wikipedia