Geoffrey wrote his book in Latin, because at this time it was the language which most people could understand.  For a long time after the Normans came to England, they spoke Norman French.  The English still spoke English, and the British Welsh or Cymric.  But every one almost who could read at all could read Latin.  So Geoffrey chose to write in Latin.  He said he translated all that he wrote from an old British book which had been brought from Brittany and given to him.  But that old British book has never been seen by any one, and it is generally thought that Geoffrey took old Welsh tales and fables for a foundation, invented a good deal more, and so made his history, and that the “old British Book” never existed at all.  His book may not be very good history — indeed, other historians were very angry and said that Geoffrey “lied saucily and shamelessly” — but it is very delightful to read.

Geoffrey’s chief hero is Arthur, and we may say that it is from this time that Arthur became a great hero of Romance.  For Geoffrey told his stories so well that they soon became famous, and they were read not only in England, but all over the Continent.  Soon story-tellers and poets in other lands began to write stories about Arthur too, and from then till now there has never been a time when they have not been read.  So to the Welsh must be given the honor of having sown a seed from which has grown the wide-spreading tree we call the Arthurian Legend.

Geoffrey begins his story long before the time of Arthur.  He begins with the coming of Brutus, the ancient hero who conquered Albion and changed its name to Britain, and he continues to about two hundred years after the death of Arthur.  But Arthur is his real hero, so he tells the story in very few words after his death.

Geoffrey tells of many battles and of how the British fought, not only with the Saxons, but among themselves.  And at last he says:  “As barbarism crept in they were no longer called Britons, but Welsh, a word derived either from Gualo, one of their dukes, or from Guales, their Queen, or else from their being barbarians.  But the Saxons did wiselier, kept peace and concord amongst themselves, tilling their fields and building anew their cities and castles. . . .  But the Welsh degenerating from the nobility of the Britons, never after recovered the sovereignty of the island, but on the contrary quarreling at one time amongst themselves, and at another with the Saxons, never ceased to have bloodshed on hand either in public or private feud.”

Geoffrey then says that he hands over the matter of writing about the later Welsh and Saxon kings to others, “Whom I bid be silent as to the kings of the Britons, seeing that they have not that book in the British speech which Walter, Archdeacon of Oxford, did convey hither out of Brittany, the which I have in this wise been at the pains of translating into the Latin speech.”

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