Charles, commonly known as Carolus Magnus or Charlemagne, succeeded Pepin in the year 768. He had conquered the land of the Saxons in eastern Germany and had built towns and monasteries all over the greater part of northern Europe. At the request of certain enemies of Abd-ar-Rahman, he had invaded Spain to fight the Moors. But in the Pyrenees he had been attacked by the wild Basques and had been forced to retire. It was upon this occasion that Roland, the great Margrave of Breton, showed what a Frankish chieftain of those early days meant when he promised to be faithful to his King, and gave his life and that of his trusted followers to safeguard the retreat of the royal army. During the last ten years of the eighth century, however, Charles was obliged to devote himself exclusively to affairs of the South. The Pope, Leo III, had been attacked by a band of Roman rowdies and had been left for dead in the street. Some kind people had bandaged his wounds and had helped him to escape to the camp of Charles, where he asked for help. An army of Franks soon restored quiet and carried Leo back to the Lateran Palace which ever since the days of Constantine, had been the home of the Pope. That was in December of the year 799. On Christmas day of the next year, Charlemagne, who was staying in Rome, attended the service in the ancient church of St. Peter. When he arose from prayer, the Pope placed a crown upon his head, called him Emperor of the Romans and hailed him once more with the title of "Augustus" which had not been heard for hundreds of years. Once more Northern Europe was part of a Roman Empire, but the dignity was held by a German chieftain who could read just a little and never learned to write. But he could fight and for a short while there was order and even the rival emperor in Constantinople sent a letter of approval to his "dear Brother." Unfortunately this splendid old man died in the year 814. His sons and his grandsons at once began to fight for the largest share of the imperial inheritance. Twice the Carolingian lands were divided, by the treaties of Verdun in the year 843 and by the treaty of Mersen-on-the-Meuse in the year 870. The latter treaty divided the entire Frankish Kingdom into two parts. Charles the Bold received the western half. It contained the old Roman province called Gaul where the language of the people had become thoroughly romanized. The Franks soon learned to speak this language and this accounts for the strange fact that a purely Germanic land like France should speak a Latin tongue.