October 21
Perhaps someone misunderstood the letters XI MM VV (eleven virgin martyrs) as eleven thousand virgins and then rationalized his misunderstanding by borrowing some Niebelungen traits and concocting a wild tale of a Christian British princess who did not want to marry a pagan prince, proposed extravagant conditions all of which were dutifully met, and was finally killed by the Huns, who were thereupon (not a moment too late) chased off by angels.
Rich robes, crown, pennant in her right hand, and in her left a scepter or spear elaborately decorated with flowers and a pennant; see Christian Images (1982), 152.