William Woo Seymour, The Cross in Tradition, History and Art, 1898, p. 387
Perrin, British Flags (1922), p. 20: "they imagined that they had seen a great army on white horses, clothed in white and bearing white banners in their hands, issue from the neighbouring mountains and come to their assistance. The leaders of this ghostly army, recognised by their names written on their banners, were St George, Saint Demetrius, and St Mercurius. If at this time the red cross had become the distinctive sign of St George one or other of these writers would surely have mentioned it, but all agree that the banners were white."
