Now make you ready, said Merlin, this night ye shall lie with Igraine in the castle of Tintagil; and ye shall be like the duke her husband, Ulfius shall be like Sir Brastias, a knight of the duke's, and I will be like a knight that hight Sir Jordanus, a knight of the duke's.

But wait ye make not many questions with her nor her men, but say ye are diseased, and so hie you to bed, and rise not on the morn till I come to you, for the castle of Tintagil is but ten miles hence; so this was done as they devised.

But the duke of Tintagil espied how the king rode from the siege of Terrabil, and therefore that night he issued out of the castle at a postern for to have distressed the king's host.

And so, through his own issue, the duke himself was slain or ever the king came at the castle of Tintagil.
So after the death of the duke, King Uther lay with Igraine more than three hours after his death, and begat on her that night Arthur, and on day came Merlin to the king, and bade him make him ready, and so he kissed the lady Igraine and departed in all haste.

But when the lady heard tell of the duke her husband, and by all record he was dead or ever King Uther came to her, then she marvelled who that might be that lay with her in likeness of her lord; so she mourned privily and held her peace.