ISOLATED FROM THE REMAINING EMPIRE, FLAVIUS QUIRINIUS, A PROVINCIAL ROMAN NOBLE, RAISES AN ARMY AGAINST MARAUDING SAXONS. The time and place: Britain from 440 to 491 AD, cut off from the Western Roman Empire as its provinces slump into Germanic kingdoms and Italy is reduced to an Eastern Roman vice-regency. This is the period whose events were transmuted into the Welsh legends of the Mabinogion, and into other accounts both...