John William Polidori,
The Vampyre
(1819)
“ The crowd was excessive—a drawing-room had not been held for a long time, and all who were anxious to bask in the smile of royalty, hastened thither. Aubrey was there with his sister. While he was standing in a corner by himself, heedless of all around him, engaged in the remembrance that the first time he had seen Lord Ruthven was in that very place—he felt himself suddenly seized by the arm, and a voice he recognized too well, sounded in his ear—"Remember your oath." ”

