When Diana got an idea into her head, however, it was apt to stick. She had a lively imagination, and she liked to picture what the Abbey had once been. She read the account of it in the local guidebook and in Chadwick's _Northern Antiquities_, which she borrowed from the library, and she further devoured Scott's _The Monastery_. Steeped in this mediæval atmosphere, she began to tell the girls such vivid stories of the doings of the brethren that they almost believed her. She invented several fictitious characters: Brother Amos, Brother Lawrence, Brother John, and Prior Andrew, and gave a most circumstantial account of their adventures.