William Gordon Perrin, British Flags: Their Early History…
“ By this time the royal "standard" supported an heraldic banner that displayed the lion which Richard placed upon his first great seal and which on his return to England he multiplied by three; but why did a symbol so obviously pagan as the Dragon survive the Conquest and that greater attention to religion—or at any rate to its outward observance—that the Conquest had brought in its train? William of Normandy had conquered England beneath the aegis of the gonfanon with golden cross that the Pope had blessed for him, yet we hear no more of it. ”
