"The reign of Stephen," in the words of our greatest living historian, "is one of the most important in our whole history, as exemplifying the working of causes and principles which had no other opportunity of exhibiting their real tendencies." To illustrate in detail the working of those principles to which the Bishop of Oxford thus refers, is the chief object I have set before myself in these pages. For this purpose I have chosen, to form the basis of my narrative, the career of Geoffrey de Mandeville, as the most perfect and typical presentment of the feudal and anarchic spirit that stamps the reign of Stephen. By fixing our glance upon one man, and by tracing his policy and its fruits, it is possible to gain a clearer perception of the true tendencies at work, and to obtain a firmer grasp of the essential principles involved. But, while availing myself of Geoffrey's career to give unity to my theme, I have not scrupled to introduce, from all available sources, any materials bearing on the period known as the Anarchy, or illustrating the points raised by the charters with which I deal.