and it lay there two hundred years and more, till the time of St. Helena, the mother of Constantine, emperor of Rome. She was the daughter of king Coel, born in Colchester, who was king of England, which was then called Britain the Greater; the emperor Constantius took her to wife for her beauty, and had by her Constantine, who was afterwards emperor of Rome. And you shall understand that the cross of our Lord was eight cubits long, and the cross-piece was three cubits and a half in length. And one part of the crown of our Lord, wherewith he was crowned, and one of the nails, and the spear-head, and many other relics, are in France, in the king's chapel[288], the crown being placed in a vessel of crystal richly worked. For a king of France bought these relics of the Jews, to whom the emperor had given them in pledge for a great sum of silver. And if it be so, as men say, that this crown is of thorns, you shall understand that it was of rushes of the sea, which prick as sharply as thorns; for I have seen and beheld many times that of Paris and that of Constantinople; for they were both one, made of rushes of the sea. But men had divided them in two parts; of which one part is at Paris, and the other part is at Constantinople. And I have one of these precious thorns, which seems like a white thorn; and it was given to me as a great favour; for there are many of them broken and fallen into the vessel that the crown lieth in; they break for dryness, when men move it, to show it to great lords that come thither.