In the 780s northern britain was dominated by two great kingdoms; pictavia, centred in north-eastern Scotland and northumbria which straddled the modern anglo-Scottish border. Within a hundred years both of these kingdom...In the 780s northern britain was dominated by two great kingdoms; pictavia, centred in north-eastern Scotland and northumbria which straddled the modern anglo-Scottish border. Within a hundred years both of these kingdoms had been thrown into chaos by the onslaught of the vikings and within two hundred years they had become distant memories.