Chapter IV. The Saxon And Danish Kings. The Conquest Of England By The Normans (901-1066). One hundred and sixty-five years elapsed between the death of Alfred and the Invasion of England by William the Conqueror. Two dynasties reigned during that period in England: first, the Saxon, which numbered ten sovereigns, and secondly, the Danish, which was represented by four princes. The first of the Saxon kings, Edward, the son of Alfred, did not enjoy a very brilliant reign, but contrived to make his authority recognized, with the help of his sister Ethelfleda, widow of Ethelred, the viceroy of Mercia. He drove back the Danes into their territory, a portion of which he conquered, and, at the death of his sister, he annexed Mercia to his states, which he left thus augmented, to his son Athelstan, when he died, in 925. This young prince was brave as well as able. He placed the Welsh tribes, always ripe for revolt, under subjection, and imposed upon them an annual tribute of gold, silver, and cattle; he repelled the people of Cornwall, who had never been thoroughly subjected by Alfred. But the Danes had not accepted their defeat. King Olaf, who was established in Northumbria, and who had recently pushed his conquests so far in Ireland as to capture the town of Dublin, ascended the Humber with more than 600 vessels: the Scots at the same time attacked the frontiers, and the Britons from Wales once more revolted. So many enemies rising suddenly did not daunt Athelstan. {60} He triumphed over his opponents: five Danish kings remained on the soil, as well as the king of Scotland's son. They all retired into their territories, there to remain until the end of the reign of Athelstan, whose court attained a degree of luxury hitherto unknown to the Saxon kings. It was there that Louis d'Outre-Mer took refuge when driven from France, and it was thence that he was recalled to the throne at the death of Charles the Simple. All England recognized the laws of Athelstan, and he had taken the title of king of the Anglo-Saxons, instead of the less assuming one of king of Wessex, when he died in 940, at the age of forty-seven years, leaving the throne to his brother Edmund. The reign of the latter, like that of his brother Edred, presents nothing remarkable with the exception of a series of battles with the Danes, who were sometimes daring and victorious, and sometimes beaten and repulsed. At the death of Edred, in 955, the Danes of Northumbria were apparently almost entirely subjected; their chiefs had lost the title of kings, and their territory was governed by an earl chosen by the Saxons. The progress had been great since the time of Alfred.