Henry ruled through the various barons and lords in England and Normandy, whom he manipulated skilfully for political effect. Political friendships, termed amicitia in Latin, were important during the 12th century, and Henry maintained a wide range of these, mediating between his friends in various factions across his realm when necessary, and rewarding those who were loyal to him. Henry also had a reputation for punishing those barons who stood against him, and he maintained an effective network of informers and spies who reported to him on events. Henry was a harsh, firm ruler, but not excessively so by the standards of the day. Over time, he increased the degree of his control over the barons, removing his enemies and bolstering his friends until the "reconstructed baronage", as Historian Warren Hollister describes it, was predominantly loyal and dependent on the King.