England revels in its Anglo-Saxon, Norman, Tudor, and Victorian past. Maybe it’s Shakespeare. Maybe it’s Churchill. Maybe it’s Rowling. But the telling of the thrilling stories seldom disappoints. Page, stage, and screen bustle with the tales of Camelot, the Lionheart, Old Bess, and the Raj.  A less celebrated – if less glorious – period was the rule of Scandinavians. From the first Viking raids at the end of the eighth century to the hammer of the Conqueror, almost three centuries later, Scandinavian power was extensive and often dominant. Much of England lived under the Danelaw for much of this time,…