When Alfred secured a definite peace with the Danes in 878, those who were averse to settling permanently returned to their old roving life. They made their way up the Somme and the Scheldt and their progress was not stopped by a brilliant victory gained by the young Lewis III in June 881 at Saucourt, near the Somme, a victory which is celebrated in the famous _Ludwigslied_. During the same years, another Viking host invaded Saxony winning a decisive victory over Duke Bruno on the Lüneburg Heath. After their defeat at Saucourt the main body of the Danes made their way to Elsloo on the Meuse whence they ravaged the Meuse, Rhine and Moselle districts plundering Cologne, Bonn, Coblentz, Aachen, Trèves and Metz. So alarmed was the emperor Charles the Fat that he entered into negotiations with the Danish king Guðröðr who was with the forces at Elsloo. He secured Guðröðr's acceptance of Christianity and the promise of security from further attack at the price of a large payment of Danegeld and the concession to Guðröðr of the province once held by Hroerekr, with large additions. The exact extent of the grant is uncertain, but it included the district of Kinnem (round Alkmaar and Haarlem) and probably covered the greater part of Modern Holland from the Vlie to the Scheldt. Here Guðröðr lived in semi-independence and might perhaps have established another Normandy within the empire had he not been ruined by too great ambition. He entirely failed to defend his province from attacks, indeed he probably gave them covert support; he intrigued with Hugo, the bastard son of Lothair II, against the emperor, married his sister Gisla, and then asked for additional territories on the Rhine and the Moselle, on the plea that his own province included no vine-growing districts. Guðröðr had now overstepped all reasonable limits: the emperor entered into negotiations with him but secured his death by treachery when a meeting was arranged near Cleves. With the fall of Guðröðr Danish rule in Frisia came to an end, and though we hear of isolated attacks even during the early years of the 10th century, there was no more serious trouble in that district.