"Who has not heard of the Vikings-the dauntless sea-rovers, who in the days of long ago were the dread of Northern Europe? We English should know something of them, for Viking blood flowed in the veins of many of our ancestors. And these fierce fighting men came in their ships across the North Sea from Norway on more than one occasion to invade England. But they came once too often, and were thoroughly defeated at the Battle of Stamford Bridge, when, as will be remembered, Harald the Hard, King of Norway, was killed in attempting to turn his namesake, King Harold of England, off his throne."