The most important historical monument that has survived to illustrate the use of the gonfanon is the celebrated piece of embroidery known as the Bayeux Tapestry. We need not here enter into the controversy that has so long raged over the question of the exact date to be assigned to this unique work. The weight of evidence inclines strongly toward a date within the last two decades of the eleventh century, but if we admit a date as late as 1150 A.D. it will not materially affect the conclusions we shall draw. In addition to five rather rudimentary forms at the mastheads of the ships, twenty-five gonfanons in all are depicted, two with five tails, one with four, and the remainder with three. Only a small proportion of the hundreds of armed men who appear in the various scenes of military activity portrayed bear gonfanons on their spears. These are the greater leaders--the barons, as the Normans called them. The variation in the number of tails is probably merely an incidental caprice of the designer or embroiderers, but there is one gonfanon which greatly exceeds the rest in size and in the length of its tails, which in this case alone are shown of such length as to curl in the wind[36]. It appears in the representation of that crucial moment in the battle at which the Normans, taken with a sudden panic, and believing that their Duke had fallen, were about to quit the fight, when William, lifting his helmet from his face, turned towards them and called out that he was still alive and by God's help would yet conquer. At the same time, a companion figure, which from the mutilated superscription in the tapestry appears to be Eustace of Boulogne, lifts this gonfanon high in the air with his left hand while with the right he points to the Duke's face; a significant action, calling attention in a twofold manner to William's presence. This gonfanon is probably the one consecrated and sent by Pope Alexander; the principal flag of the Norman army on the day of battle[37]. It cannot be supposed that the most elaborate flag in the whole tapestry is merely the personal gonfanon of Eustace, and indeed the assertion of M. Marignan that the device shown in this gonfanon represents the arms of the Counts of Boulogne has been sufficiently refuted by Dr Round[38]. As a matter of fact this device (which may be described as a cross formy between four roundels) was not an uncommon one at that period. It will be found upon the reverse of many of the coins of the Holy Roman Emperors from Charlemagne onwards and upon those of some of the English monarchs before the Conquest. On the other hand, the gonfanons which appear in earlier scenes in the tapestry either in William's hand or in the hand of the gonfanoner in attendance on him, display only a plain Greek cross. It is therefore not unreasonable to assume that this particular device was associated with sovereign power and would consequently be suitable for a banner that was intended to be an outward sign of the