Another point deserving of notice is that this great gathering of earls enables us to draw some important conclusions as to the origin and development of their titles. We may, for instance, safely infer that when a Christian name was borne by one earl alone, he used for his style that name with the addition of "Comes" either as a prefix or as a suffix. Thus we have in this instance "Comes Alanus" and "Comes Simon." But when two or more earls bore the same Christian name, they had to be distinguished by some addition. Thus we have "Comes Gislebertus de Pembroc" and "Comes Gislebertus de Heortford," or "Comes Robertus de Ferrers," as distinguished from Earl Robert "of Gloucester." The addition of "de Essexa" to Earl Geoffrey himself, which is found in this and other charters (see pp. 158, 183), can only, it would seem, be intended to distinguish him from Count Geoffrey of Anjou. But here the striking case is that of "Willelmo Comite Warenna," "Willelmo Comite de Albarmarlâ," and "Comite Willelmo de Sudsexâ." These examples show us how perfectly immaterial was the source from which the description was taken. "Warenna" is used as if a surname; "Albarmarla" is "Aumâle," a local name; and "Sudsexa" needs no comment. The same noble who here attests as Earl of "Albarmarla" elsewhere attests as Earl "of York," while the Earl "of Sussex" is elsewhere a witness as Earl "of Chichester" or "of Arundel." In short, the "Comes" really belongs to the Christian name alone. The descriptive suffix is distinct and immaterial. But the important inference which I draw from the conclusion arrived at above is that where we find such descriptive suffix employed, we may gather that there was in existence at the time some other earl or count with the same Christian name.[463] Among the earls, we look at once, but we look in vain, for the name of Waleran of Meulan. But his half-brother, William de Warenne, one, like himself, of the faithful three,[464] duly figures at the head of the list. He is followed by their brother-in-law, the Earl of Pembroke, whose nephew and namesake, the Earl of Hertford, and brother, Baldwin fitz Gilbert, are also found among the witnesses. With them is another of the faithful three, Earl Simon of Northampton. There too is Earl Alan of Richmond, and the fortunate William of Albini, now Earl William of Sussex. Robert of Ferrers and William of Aumâle, both of them heroes of the Battle of the Standard, complete the list of earls.[465]