Stephen, King of England Robert of Gloucester rebelled against the King, starting the descent into civil war in England. An illegitimate son of Henry I and the half-brother of the Empress Matilda, Robert was one of the most powerful Anglo-Norman barons, controlling estates in Normandy as well as the Earldom of Gloucester. He was known for his qualities as a statesman, his military experience, and leadership ability. Robert had tried to convince Theobald to take the throne in 1135; he did not attend Stephen's first court in 1136 and it took several summons to convince him to attend court at Oxford later that year.
The History of the Norman Conquest of England He was much involved in politics and not unreasonably regarded participation in government as useful training for a historian…Above all, he had tremendous zest. Marjorie Chibnall added that in his knowledge of medieval chronicles Freeman had no rival. As a set-off to this list Barlow noted Freeman's dogmatism, pugnacity and indifference to various subjects he considered irrelevant to his survey of 11th century England: theology, philosophy, and most of the arts. Freeman went on to publish a history of "The Reign of William Rufus" (1882), in two volumes. He also wrote a series of works on the Anglo-Saxon and Norman