This is an example of the forcible revival of an ancient tradition to suit a later fact, and is evidence of the enormous impression which the event to which it refers had upon the locality. Kett's rebellion was one thing to the nation at large and quite another thing to this district of Norfolk, and the great events of the tenth century preserved in legend were equated with the minor events of the sixteenth century, thus enabling us to understand better the depth of the local feeling which produced these events. [Illustration: PLAN OF THE SITE OF THE "HEAVEN WALLS" AT LITLINGTON, ROYSTON, CAMBRIDGESHIRE] Both local and personal traditions are of interest in the unravelling of the meaning of historical events, and the forces at the back of them, and I will add a note of one or two examples of those humbler traditions which confirm or enhance the value of the historical record. They are of the greatest importance if correctly understood. They include such examples, for instance, as Mr. Kemble notes when he says, "I have more than once walked, ridden, or rowed, as land and stream required, round the bounds of Anglo-Saxon estates, and have learned with astonishment that the names recorded in my charter were those still used by the woodcutter or the shepherd of the neighbourhood."[47] This is remarkable testimony to the persistence of tradition. It is the commencing point of a whole series of examples which go to show that embedded in the memories of the people, and supported by no other force but tradition, there are innumerable traces of historic fact.[48]