Gielgud, Sir John, and Josephine Tey. “Foreword”. Plays by Gordon Daviot, Peter Davies, p. ix - xii.
Weintraub, Stanley, editor. Dictionary of Literary Biography 10. Gale Research.
Roy, Sandra. Josephine Tey. Twayne.
The play grew out of an argument with Gwen Ffrangcon-Davies
(Daviot's friend since they met on the set of Richard of Bordeaux) about Mary Stuart
's character. (At that time Daviot sided with Elizabeth of England