My contention is that the date of this event was Christmas, 1141, and that the choice, for its scene, of the Kentish capital was a graceful compliment to that county which, in the darkest hour of the king's fortunes, had remained faithful to his cause, and to the support of which his restoration had been so largely due.[438] I further hold that the second charter granted to Geoffrey de Mandeville was executed on this occasion, and that in its witnesses we have the list of that "nobilitas procerum" by which, according to Gervase, this coronation was attended. This charter, when rightly dated, is indeed the keystone of my story. For without it we could not form that series on which the sequence of events is based. It is admittedly subsequent to the king's liberation, for it refers to the battle of Lincoln. It must also be previous to Geoffrey's death in 1144. These are the obvious limits given in the official calendar.[439] But it must further be previous to Geoffrey's fall in 1143. Lastly, it must be previous to the Oxford, or second, charter of the Empress, in which we shall find it is referred to. As that charter cannot be later than the summer of 1142, our limit is again narrowed. Now the charter is tested at Canterbury. Stephen cannot, it seems, have been there in the course of 1142. This accordingly leaves us, as the only possible date, the close of 1141; and this is the very date of the king's coronation at Canterbury. When we add to this train of reasoning the fact that the number of earls by whom the charter is witnessed clearly points to some great state ceremonial, we cannot feel the slightest doubt that the charter must, as I observed, have passed on this occasion. With this conclusion its character will be found in complete accordance, for it plainly represents the price for which the traitor earl consented to change sides again, and to place at the disposal of his outraged king that Tower of London, its citadel and its dread, the possession of which once more enabled him to dictate his own terms. Those terms were that, in the first place, he should forfeit nothing for his treason in having joined the cause of the Empress, and should be confirmed in his possession of all that he held before the king's capture. But his demands far exceeded the mere _status quo ante_. Just as he had sold his support to the Empress when she gave him an advance on Stephen's terms, so the Queen must have brought him back by offering terms, at the crisis of the struggle, in excess even of those which he had just wrung from the Empress. He would now insist that these great concessions should be confirmed by the king himself. Such is the explanation of the strange character of this Canterbury charter. CHARTER OF THE KING TO GEOFFREY DE MANDEVILLE (Christmas, 1141).