As we have noted, the duke’s power was in the main confined to scattered strongholds such as Falaise and Rouen.[134] Through the open country Henry was able to move about practically at will. He went to Bec and had a cordial interview with Anselm (15 August). Much progress had been made towards the settlement of the investiture controversy since their meeting at Laigle the year before, and they were now completely reconciled. Anselm returned to England disposed to give the king his full support.[135] Every moral obstacle now seemed removed from Henry’s path.[136]
Meanwhile, or soon after,[137] the king began operations against the castle of Tinchebray. Adopting the well known expedient of the siegecraft of the period, he erected a counter fortress against the place, and installed in it Thomas de Saint-Jean with a garrison of knights and foot soldiers. Thereupon William of Mortain, lord of Tinchebray, collected forces which were more than a match for Thomas de Saint-Jean and his men, and threw food and necessary supplies into the stronghold.[138] But by this time the king had been powerfully reënforced with auxiliary troops from Maine and Brittany, under the command of Helias of La Flèche and of Alan Fergant,[139] and he began the siege of Tinchebray in earnest.[140]
Robert Curthose, now reduced to desperate straits, and urged on by the importunity of William of Mortain,[141] decided to stake all on the issue of a battle in the open.[142] Collecting all his forces, he marched upon Tinchebray and challenged the king to raise the siege or prepare for battle.[143] Again, as at Alton in 1101, the two brothers stood facing one another, about to engage in a fratricidal struggle. But again there were negotiations. Certain men of religion, the venerable hermit Vitalis among them, intervened to prevent the conflict.[144] The king, as always, was careful to justify himself before the public eye; and, if we can trust our authority, he offered terms of peace. Protesting loudly that he was actuated by no worldly ambition, but only by a desire to succor the poor and to protect the suffering church, he proposed that the duke surrender to him all the castles in Normandy and the whole financial and judicial administration of the duchy, reserving for himself one half of the revenues. Henry, on his side, would undertake to pay the duke, out of the English treasury, an annual subsidy equal to the other half of the Norman revenues; and, for the future, Robert might revel in feasts and games and all delights, in perfect security and in freedom from all care. Such terms, if indeed they were ever really proposed, were in themselves an insult. And, moreover, the duke had already had bitter experience of Henry’s devotion to treaties. The monk of Saint-Évroul, therefore, becomes quite incredible when he would have us believe that Robert laid these proposals seriously before his council, and insinuates that he was inclined to accede to them. In any case, the duke’s supporters rejected them with violent language, and negotiations were broken off.[145] Both sides now prepared for battle.
The sources are by no means clear, or in perfect accord, as to the exact disposition of the forces in the battle of Tinchebray; but the general plan of the engagement is clear,[146] as is also the very considerable numerical superiority which the king enjoyed.[147] The forces on either side were composed of both mounted knights and foot soldiers;[148] and, so far as it is possible to say from the evidence, they were arranged in columns of successive divisions, called acies, drawn up one behind another.[149] William of Mortain commanded the vanguard of the ducal forces, and Robert of Bellême the rear.[150] It is not clear what position the duke held in the battle formation.[151] Our information as to the disposition of the royal forces is fuller, but confusing. The first division, or acies, was composed in the main of foot soldiers from the Bessin, the Avranchin, and the Cotentin—probably under the command of Ranulf of Bayeux[152]—but they were supported by a considerable body of mounted knights. The second division, under the immediate command of King Henry, was likewise made up of both mounted knights and men fighting on foot, the latter in this case being the king in person and a considerable number of his barons who had dismounted in order to give greater stability to the line.[153] A further division of some sort may have been placed in reserve in the rear.[154] Most important of all, the auxiliary knights from Maine and Brittany, under the command of Helias of La Flèche and Alan Fergant, were stationed on the field at some distance to one side[155] in readiness for a strategic stroke at the proper moment.
The action was opened by William of Mortain, who charged at the head of Robert’s vanguard;[156] and for a time the ducal forces gained a considerable advantage and pushed the royal van back at several points. But they were unable to gain a decision; and while the opposing forces were locked together in a great mêlée of hand-to-hand encounters, the Bretons and the Manceaux charged impetuously from their distant position, and, falling upon the flank of the ducal forces, cut them in two and wrought great havoc among the foot soldiers.[157] Robert of Bellême, seeing which way the battle was going, saved himself by flight; and the forces of the duke thereupon dissolved in a general rout.[158]
Robert Curthose was captured by Waldric, the king’s chancellor, who, though a cleric, had taken his place among the knights in the battle.[159] The Bretons captured William of Mortain and were with some difficulty persuaded to surrender their prize to the king. Robert d’Estouteville, William de Ferrières, William Crispin, Edgar Atheling, and many others were also taken prisoners.[160] Henry pardoned some, including the Atheling, and set them at liberty, but others he kept in confinement for the rest of their lives.[161] A considerable number of the duke’s foot soldiers had been slain, and many more had been captured.[162] But the casualties among the king’s forces had been negligible. “Hardly two” of his men had been killed, while “only one,” Robert de Bonebos, had been wounded.[163] The battle had been joined at about nine o’clock in the morning, probably on the 29th of September[164] 1106. It had lasted “barely an hour,”[165] yet it deserves to rank among the decisive battles of the twelfth century, for it had settled the fate of Normandy and of Robert Curthose.
FOOTNOTES
[1] Ordericus, iv, p. 116.
[2] “Nec simul, sed separatim variisque temporibus, de multimodis violatae fidei reatibus implacitavit.” Ordericus, iv, p. 161.